[svn-r977] Purpose:

    New feature

Solution:
    Added some new new tests to show that paths involving HARDLINKS
    and paths involving SOFTLINKS convert existing objects from H5 to
    H4 the same way that paths involving no links does.

Platform tested:
    Solaris2.5

32 files changed, 1317 insertions, 500 deletions

diff --git a/tools/testfiles/h5dumptst.c b/tools/testfiles/h5dumptst.c
index b145b3d..7cc9eb4 100644
--- a/tools/testfiles/h5dumptst.c
+++ b/tools/testfiles/h5dumptst.c
@@ -14,6 +14,8 @@
 #define FILE8 "tdset2.h5"
 #define FILE9 "tcompound2.h5"
 #define FILE10 "tloop.h5"
+#define FILE11 "tloop2.h5"
+#define FILE12 "tmany.h5"
 
 static void test_group(void) {
 hid_t fid, group;
@@ -734,6 +736,17 @@ float dset2_1[10], dset2_2[3][5];
 
 }
 
+/*
+            o
+          /___\
+      g1 o/   \o g2
+          \___/  
+
+   
+o - group objects
+
+*/
+
 static void test_loop(void) {
 hid_t fid, group;
 
@@ -750,6 +763,204 @@ hid_t fid, group;
   H5Fclose(fid);
 }
 
+static void test_loop2(void) {
+hid_t fid, group;
+
+  fid = H5Fcreate(FILE11, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  /* create group object g1 and implcit path from root object */
+  group = H5Gcreate (fid, "/g1", 0);
+  H5Gclose(group);
+
+  /* create group object g2 and implcit path from root object */
+  group = H5Gcreate (fid, "/g2", 0);
+  H5Gclose(group);
+
+  /* create path from object at /g1 to object at /g2 and name it g1.1 */
+  H5Glink (fid, H5G_LINK_HARD, "/g2", "/g1/g1.1"); /* 
+
+  /* create path from object at /g2 to object at /g1 and name it g2.1 */
+  H5Glink (fid, H5G_LINK_SOFT, "/g1", "/g2/g2.1");
+
+  H5Fclose(fid);
+
+}
+
+/*
+                  /
+     |       |       |   \    \    \
+     g1     g2      g3   g4   g5    g6
+    / \      |       |    \     \    \
+ g1.1 g1.2 slink2  link3 dset2 slink4 dset3
+  |    |    (g1)  (dset2)      (dset3)
+ dset1 link1
+      (dset1)
+*/
+
+static void test_many(void) {
+hid_t fid, group, attr, dataset, space, space2, type, create_plist;
+hsize_t dims[2];
+int data[2][2], dset2[10][10], dset3[10][10];
+double d[10];
+
+char buf[60];
+int i, j;
+int i0, i1, i2, i3;
+int a[2][2][2][2];
+double b[2][2][2][2];
+double c[2][2][2][2];
+hsize_t sdim, maxdim;
+
+typedef struct {	/* compound type has members with rank > 1	*/
+  int a[2][2][2][2];	/* arrays are 2x2x2x2				*/
+  double b[2][2][2][2];
+  double c[2][2][2][2];
+} dset1_t;
+dset1_t dset1[6];
+
+size_t dim[4];
+int index[4] = {0,1,2,3};  /* normal indicies */
+const int perm[4] = {0,1,2,3};  /* the 0'th and the 3'rd indices are permuted */
+
+  fid = H5Fcreate(FILE12, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  group = H5Gcreate (fid, "/g1", 0);
+  H5Gclose(group);
+
+  create_plist = H5Pcreate(H5P_DATASET_CREATE);
+
+  sdim = 2;
+  H5Pset_chunk(create_plist, 1, &sdim);
+
+  group = H5Gcreate (fid, "/g1/g1.1", 0);
+
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset1[0]));
+
+  dim[0] = dim[1] = dim[2] = dim[3] = 2;
+  H5Tinsert_array(type, "a_array", HOFFSET(dset1_t, a), 4, dim, perm, H5T_STD_I32BE);
+  H5Tinsert_array(type, "b_array", HOFFSET(dset1_t, b), 4, dim, perm, H5T_IEEE_F64BE);
+  H5Tinsert_array(type, "c_array", HOFFSET(dset1_t, c), 4, dim, perm, H5T_IEEE_F64BE);
+
+/*
+  H5Tcommit(group, "type1", type);
+*/
+
+  /* dset1 */
+  sdim = 6;
+  maxdim = H5S_UNLIMITED;
+  space = H5Screate_simple(1, &sdim, &maxdim);
+  dataset = H5Dcreate(group, "dset1", type, space, create_plist);
+
+  /* add attributes to dset1 */
+  dims[0] = 10;
+  space2 = H5Screate_simple(1, dims, NULL);
+  attr = H5Acreate (dataset, "attr1", H5T_NATIVE_CHAR, space2, H5P_DEFAULT);
+  sprintf(buf, "abcdefghi");
+  H5Awrite(attr, H5T_NATIVE_CHAR, buf);
+  H5Sclose(space2);
+  H5Aclose(attr);
+
+  dims[0] = 2; dims[1] = 2;
+  space2 = H5Screate_simple(2, dims, NULL);
+  attr = H5Acreate (dataset, "attr2", H5T_STD_I32BE, space2, H5P_DEFAULT);
+  data[0][0] = 0; data[0][1] = 1; data[1][0] = 2; data[1][1] = 3;
+  H5Awrite(attr, H5T_STD_I32BE, data);
+  H5Sclose(space2);
+  H5Aclose(attr);
+
+  dims[0] = 10;
+  space2 = H5Screate_simple(1, dims, NULL);
+  attr = H5Acreate (dataset, "attr3", H5T_IEEE_F64BE, space2, H5P_DEFAULT);
+  for (i = 0; i < 10; i++) d[i] = 0.1 * i;
+  H5Awrite(attr, H5T_IEEE_F64BE, d);
+  H5Sclose(space2);
+  H5Aclose(attr);
+
+  for (j=0; j<sdim; j++) {
+	for (i3 = 0; i3 < 2; i3++) {
+		index[perm[3]] = i3;
+	for (i2 = 0; i2 < 2; i2++) {
+		index[perm[2]] = i2;
+	for (i1 = 0; i1 < 2; i1++) {
+		index[perm[1]] = i1;
+	for (i0 = 0; i0 < 2; i0++) {
+		index[perm[0]] = i0;
+		
+		dset1[j].a[index[3]][index[2]][index[1]][index[0]] = i0+j;
+		dset1[j].b[index[3]][index[2]][index[1]][index[0]] = (double)(i0+j);
+		dset1[j].c[index[3]][index[2]][index[1]][index[0]] = (double)(i0+j+sdim);
+	}
+	}
+	}
+	}
+  }
+
+  H5Dwrite(dataset, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset1);
+
+  H5Dclose(dataset);
+  H5Sclose(space);
+
+  H5Tclose(type);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g1/g1.2", 0);
+  H5Glink (group, H5G_LINK_HARD, "/g1/g1.1/dset1", "link1");
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g2", 0);
+  H5Glink (group, H5G_LINK_SOFT, "/g1", "slink2");
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g3", 0);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g4", 0);
+
+  /* dset2 */
+  dims[0] = 10; dims[1] = 10;
+  space = H5Screate_simple(2, dims, NULL);
+
+  dataset = H5Dcreate(group, "dset2", H5T_STD_I32BE, space, H5P_DEFAULT);
+  for (i = 0; i < 10; i++)
+       for (j = 0; j < 10; j++)
+            dset2[i][j] = j;
+  H5Dwrite(dataset, H5T_STD_I32BE, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset2);
+
+  H5Dclose(dataset);
+
+  H5Sclose(space);
+  H5Gclose(group);
+
+  group = H5Gopen(fid, "/g3");
+  H5Glink (group, H5G_LINK_HARD, "/g4/dset2", "link3");
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g5", 0);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g6", 0);
+  /* dset3 */
+  dims[0] = 10; dims[1] = 10;
+  space = H5Screate_simple(2, dims, NULL);
+
+  dataset = H5Dcreate(group, "dset3", H5T_STD_I32BE, space, H5P_DEFAULT);
+  for (i = 0; i < 10; i++)
+       for (j = 0; j < 10; j++)
+            dset3[i][j] = i;
+  H5Dwrite(dataset, H5T_STD_I32BE, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset3);
+
+  H5Dclose(dataset);
+
+  H5Sclose(space);
+  H5Gclose(group);
+
+  group = H5Gopen(fid, "/g5");
+  H5Glink (group, H5G_LINK_SOFT, "/g6/dset3", "slink4");
+  H5Gclose(group);
+
+  H5Fclose(fid);
+
+}
 
 int main(void){
 
@@ -757,12 +968,16 @@ test_group();
 test_attribute();
 test_softlink();
 test_dataset();
-test_dataset2();
 test_hardlink();
 test_compound_dt();
-test_compound_dt2();
-test_loop();
 test_all();
+test_loop();
+
+test_dataset2();
+test_compound_dt2();
+test_loop2();
+test_many();
+
 return 0;
 
 }
diff --git a/tools/testfiles/tall.dmp b/tools/testfiles/tall.dmp
index 6c53f3b..40ab6aa 100644
--- a/tools/testfiles/tall.dmp
+++ b/tools/testfiles/tall.dmp
@@ -18,7 +18,7 @@ Entries:-
    number of attributes = 0 
      #1 (Vgroup)
 	tag = 1965;reference = 13;
-	number of entries = 0;
+	number of entries = 2;
 	name = g2; class = HDF5
    number of attributes = 0 
 
@@ -31,7 +31,7 @@ Vgroup:1
 Entries:-
      #0 (Vgroup)
 	tag = 1965;reference = 6;
-	number of entries = 0;
+	number of entries = 2;
 	name = g1.1; class = HDF5
    number of attributes = 0 
      #1 (Vgroup)
@@ -44,10 +44,13 @@ Entries:-
 Vgroup:2
      tag = 1965; reference = 6;
      name = g1.1; class = HDF5;
-     number of entries = 0;
+     number of entries = 2;
    number of attributes = 0 
 Entries:-
-     None.
+     #0 (Numeric Data Group)
+	tag = 720; reference = 7;
+     #1 (Numeric Data Group)
+	tag = 720; reference = 9;
 
 
 Vgroup:3
@@ -75,10 +78,13 @@ Entries:-
 Vgroup:5
      tag = 1965; reference = 13;
      name = g2; class = HDF5;
-     number of entries = 0;
+     number of entries = 2;
    number of attributes = 0 
 Entries:-
-     None.
+     #0 (Numeric Data Group)
+	tag = 720; reference = 14;
+     #1 (Numeric Data Group)
+	tag = 720; reference = 16;
 
 
 Vgroup:6
@@ -340,20 +346,25 @@ Entries:-
 Graphical representation of the file:-
 (vg#: vgroup;   vd: vdata)
 
-   vg0 	-- vg1 	-- vg2 
+   vg0 	-- vg1 	-- vg2 	-- Numeric Data Group  
+			-- Numeric Data Group  
 		-- vg3 	-- vg4 
-	-- vg5 
+	-- vg5 	-- Numeric Data Group  
+		-- Numeric Data Group  
 
-   vg1 	-- vg2 
+   vg1 	-- vg2 	-- Numeric Data Group  
+		-- Numeric Data Group  
 	-- vg3 	-- vg4 
 
-   vg2 
+   vg2 	-- Numeric Data Group  
+	-- Numeric Data Group  
 
    vg3 	-- vg4 
 
    vg4 
 
-   vg5 
+   vg5 	-- Numeric Data Group  
+	-- Numeric Data Group  
 
    vg6 	-- vd  
 
diff --git a/tools/testfiles/tall.h5 b/tools/testfiles/tall.h5
index 8ccc0e0..3259f0172 100644
--- a/tools/testfiles/tall.h5
+++ b/tools/testfiles/tall.h5
diff --git a/tools/testfiles/tattr-1.ddl b/tools/testfiles/tattr-1.ddl
index bdf4f3c..996b70a 100644
--- a/tools/testfiles/tattr-1.ddl
+++ b/tools/testfiles/tattr-1.ddl
@@ -24,5 +24,19 @@ GROUP "/" {
          0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9
       }
    }
+   ATTRIBUTE "attr4" {
+      DATATYPE { "H5T_STD_I32BE" }
+      DATASPACE { ARRAY ( 0 ) ( 0 ) }
+      DATA {
+         100
+      }
+   }
+   ATTRIBUTE "attr5" {
+      DATATYPE { "undefined string" }
+      DATASPACE { ARRAY ( 0 ) ( 0 ) }
+      DATA {
+         Unable to print data.
+      }
+   }
 }
 }
diff --git a/tools/testfiles/tattr-4.ddl b/tools/testfiles/tattr-4.ddl
index a110bef..77c888c 100644
--- a/tools/testfiles/tattr-4.ddl
+++ b/tools/testfiles/tattr-4.ddl
@@ -3,6 +3,10 @@ Expected output for 'h5dump -a attr4 tattr.h5'
 #############################
 HDF5 "tattr.h5" {
 ATTRIBUTE "attr4" {
-   h5dump error: unable to open attribute.
+   DATATYPE { "H5T_STD_I32BE" }
+   DATASPACE { ARRAY ( 0 ) ( 0 ) }
+   DATA {
+      100
+   }
 }
 }
diff --git a/tools/testfiles/tattr.dmp b/tools/testfiles/tattr.dmp
index 277c0b6..63a7454 100644
--- a/tools/testfiles/tattr.dmp
+++ b/tools/testfiles/tattr.dmp
@@ -5,7 +5,7 @@ Vgroup:0
      tag = 1965; reference = 2;
      name = /; class = HDF5;
      number of entries = 0;
-   number of attributes = 3 
+   number of attributes = 4 
     attr0: name=attr1 type=20 count=24 size=24
 	97 116 116 114 105 98 117 116 101 32 111 102 32 114 111 
 	111 116 32 103 114 111 117 112 0 
@@ -14,6 +14,8 @@ Vgroup:0
     attr2: name=attr3 type=6 count=10 size=80
 	0.000000 0.100000 0.200000 0.300000 0.400000 0.500000 0.600000 
 	0.700000 0.800000 0.900000 
+    attr3: name=attr4 type=24 count=1 size=4
+	100 
 Entries:-
      None.
 
@@ -61,4 +63,16 @@ Vdata: 2
 Loc.     Data
 0        0.000000 0.100000 0.200000 0.300000 0.400000 0.500000 0.600000 0.700000 0.800000 0.900000  ; 
 
+Vdata: 3
+   tag = 1962; reference = 6;
+   number of records = 1; interlace = 0;
+   fields = [VALUES];
+   record size (in bytes) = 4;
+   name = attr4; class = Attr0.0;
+   number of attributes = 0 
+- field index 0: [VALUES], type=24, order=1
+   number of attributes = 0 
+Loc.     Data
+0        100  ; 
+
 File name: testfiles/tattr.hdf 
diff --git a/tools/testfiles/tattr.h5 b/tools/testfiles/tattr.h5
index a75bb52..6a98734 100644
--- a/tools/testfiles/tattr.h5
+++ b/tools/testfiles/tattr.h5
diff --git a/tools/testfiles/tcomp-1.ddl b/tools/testfiles/tcomp-1.ddl
index d837aff..0f1c79f 100644
--- a/tools/testfiles/tcomp-1.ddl
+++ b/tools/testfiles/tcomp-1.ddl
@@ -3,7 +3,7 @@ Expected output for 'h5dump tcompound.h5'
 #############################
 HDF5 "tcompound.h5" {
 GROUP "/" {
-   DATATYPE "#3432:0" {
+   DATATYPE "#5992:0" {
       H5T_STD_I32BE int;
       H5T_IEEE_F32BE float;
    }
@@ -28,6 +28,32 @@ GROUP "/" {
             {0,0}, {1,1.1}, {2,2.2}, {3,3.3}, {4,4.4}
          }
       }
+      DATASET "dset3" {
+         DATATYPE {
+            HARDLINK { "/type2" }
+         }
+         DATASPACE { ARRAY ( 3, 6 ) ( 3, 6 ) }
+         DATA {
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+            {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]}
+         }
+      }
       DATASET "dset4" {
          DATATYPE {
             HARDLINK { "/group1/type3" }
@@ -45,11 +71,11 @@ GROUP "/" {
    GROUP "group2" {
       DATASET "dset5" {
          DATATYPE {
-            HARDLINK { "#3432:0" }
+            HARDLINK { "#5992:0" }
          }
          DATASPACE { ARRAY ( 5 ) ( 5 ) }
          DATA {
-            {0,0}, {1,1}, {2,2}, {3,3}, {4,4}
+            {0,0}, {1,0.1}, {2,0.2}, {3,0.3}, {4,0.4}
          }
       }
    }
@@ -59,7 +85,7 @@ GROUP "/" {
    }
    DATATYPE "type2" {
       H5T_STD_I32BE int_array[4];
-      H5T_STD_I32BE float_array[5][6];
+      H5T_IEEE_F32BE float_array[5][6];
    }
 }
 }
diff --git a/tools/testfiles/tcomp-2.ddl b/tools/testfiles/tcomp-2.ddl
index 9b6bb89..d3c27df 100644
--- a/tools/testfiles/tcomp-2.ddl
+++ b/tools/testfiles/tcomp-2.ddl
@@ -8,7 +8,7 @@ DATATYPE "/type1" {
 }
 DATATYPE "/type2" {
    H5T_STD_I32BE int_array[4];
-   H5T_STD_I32BE float_array[5][6];
+   H5T_IEEE_F32BE float_array[5][6];
 }
 DATATYPE "/group1/type3" {
    H5T_STD_I32BE int;
diff --git a/tools/testfiles/tcomp-3.ddl b/tools/testfiles/tcomp-3.ddl
index c5fd1d4..ebbc895 100644
--- a/tools/testfiles/tcomp-3.ddl
+++ b/tools/testfiles/tcomp-3.ddl
@@ -4,11 +4,11 @@ Expected output for 'h5dump -d /group2/dset5 -g /group1 tcompound.h5'
 HDF5 "tcompound.h5" {
 DATASET "/group2/dset5" {
    DATATYPE {
-      HARDLINK { "#3432:0" }
+      HARDLINK { "#5992:0" }
    }
    DATASPACE { ARRAY ( 5 ) ( 5 ) }
    DATA {
-      {0,0}, {1,1}, {2,2}, {3,3}, {4,4}
+      {0,0}, {1,0.1}, {2,0.2}, {3,0.3}, {4,0.4}
    }
 }
 GROUP "/group1" {
@@ -21,6 +21,32 @@ GROUP "/group1" {
          {0,0}, {1,1.1}, {2,2.2}, {3,3.3}, {4,4.4}
       }
    }
+   DATASET "dset3" {
+      DATATYPE {
+         HARDLINK { "/type2" }
+      }
+      DATASPACE { ARRAY ( 3, 6 ) ( 3, 6 ) }
+      DATA {
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]},
+         {[0,1,2,3],[0.1,0.1,0.1,0.1,0.1,0.1,0.2,0.2,0.2,0.2,0.2,0.2,0.3,0.3,0.3,0.3,0.3,0.3,0.4,0.4,0.4,0.4,0.4,0.4,0.5,0.5,0.5,0.5,0.5,0.5]}
+      }
+   }
    DATASET "dset4" {
       DATATYPE {
          HARDLINK { "/group1/type3" }
diff --git a/tools/testfiles/tcomp-4.ddl b/tools/testfiles/tcomp-4.ddl
index 2ae8e4c..80ed997 100644
--- a/tools/testfiles/tcomp-4.ddl
+++ b/tools/testfiles/tcomp-4.ddl
@@ -3,17 +3,16 @@ Expected output for 'h5dump -t /#3432:0 -g /group2 tcompound.h5'
 #############################
 HDF5 "tcompound.h5" {
 DATATYPE "/#3432:0" {
-   H5T_STD_I32BE int;
-   H5T_IEEE_F32BE float;
+   h5dump error: unable to open /#3432:0
 }
 GROUP "/group2" {
    DATASET "dset5" {
       DATATYPE {
-         HARDLINK { "#3432:0" }
+         HARDLINK { "#5992:0" }
       }
       DATASPACE { ARRAY ( 5 ) ( 5 ) }
       DATA {
-         {0,0}, {1,1}, {2,2}, {3,3}, {4,4}
+         {0,0}, {1,0.1}, {2,0.2}, {3,0.3}, {4,0.4}
       }
    }
 }
diff --git a/tools/testfiles/tcompound.dmp b/tools/testfiles/tcompound.dmp
index d513cf1..c0da354 100644
--- a/tools/testfiles/tcompound.dmp
+++ b/tools/testfiles/tcompound.dmp
@@ -4,17 +4,24 @@ File name: testfiles/tcompound.hdf
 Vgroup:0
      tag = 1965; reference = 2;
      name = /; class = HDF5;
-     number of entries = 2;
+     number of entries = 3;
    number of attributes = 0 
 Entries:-
-     #0 (Vgroup)
+     #0 (Vdata)
+	tag = 1962; reference = 3; 
+	number of records = 5; interlace = 0;
+	fields = [a_name, b_name, c_name];
+	record size (in bytes) = 16;
+	name = dset1; class = HDF5;
+	total number of attributes = 0.
+     #1 (Vgroup)
 	tag = 1965;reference = 4;
-	number of entries = 0;
+	number of entries = 2;
 	name = group1; class = HDF5
    number of attributes = 0 
-     #1 (Vgroup)
+     #2 (Vgroup)
 	tag = 1965;reference = 10;
-	number of entries = 0;
+	number of entries = 1;
 	name = group2; class = HDF5
    number of attributes = 0 
 
@@ -22,30 +29,52 @@ Entries:-
 Vgroup:1
      tag = 1965; reference = 4;
      name = group1; class = HDF5;
-     number of entries = 0;
+     number of entries = 2;
    number of attributes = 0 
 Entries:-
-     None.
+     #0 (Vdata)
+	tag = 1962; reference = 5; 
+	number of records = 5; interlace = 0;
+	fields = [int_name, float_name];
+	record size (in bytes) = 8;
+	name = dset2; class = HDF5;
+	total number of attributes = 0.
+     #1 (Vdata)
+	tag = 1962; reference = 7; 
+	number of records = 5; interlace = 0;
+	fields = [int, float];
+	record size (in bytes) = 8;
+	name = dset4; class = HDF5;
+	total number of attributes = 0.
 
 
 Vgroup:2
      tag = 1965; reference = 10;
      name = group2; class = HDF5;
-     number of entries = 0;
+     number of entries = 1;
    number of attributes = 0 
 Entries:-
-     None.
+     #0 (Vdata)
+	tag = 1962; reference = 11; 
+	number of records = 5; interlace = 0;
+	fields = [int, float];
+	record size (in bytes) = 8;
+	name = dset5; class = HDF5;
+	total number of attributes = 0.
 
 
 Graphical representation of the file:-
 (vg#: vgroup;   vd: vdata)
 
-   vg0 	-- vg1 
-	-- vg2 
+   vg0 	-- vd  
+	-- vg1 	-- vd  
+		-- vd  
+	-- vg2 	-- vd  
 
-   vg1 
+   vg1 	-- vd  
+	-- vd  
 
-   vg2 
+   vg2 	-- vd  
 
 File name: testfiles/tcompound.hdf 
 
@@ -108,7 +137,7 @@ Vdata: 3
 - field index 1: [float], type=5, order=1
    number of attributes = 0 
 Loc.     Data
-0        0  0.000000  ; 1  1.000000  ; 2  2.000000  ; 
-3        3  3.000000  ; 4  4.000000  ; 
+0        0  0.000000  ; 1  0.100000  ; 2  0.200000  ; 
+3        3  0.300000  ; 4  0.400000  ; 
 
 File name: testfiles/tcompound.hdf 
diff --git a/tools/testfiles/tcompound.h5 b/tools/testfiles/tcompound.h5
index 8c8eb69..65b5d09 100644
--- a/tools/testfiles/tcompound.h5
+++ b/tools/testfiles/tcompound.h5
diff --git a/tools/testfiles/tcompound2.dmp b/tools/testfiles/tcompound2.dmp
index 4a16d87..2475226 100644
--- a/tools/testfiles/tcompound2.dmp
+++ b/tools/testfiles/tcompound2.dmp
@@ -4,17 +4,24 @@ File name: testfiles/tcompound2.hdf
 Vgroup:0
      tag = 1965; reference = 2;
      name = /; class = HDF5;
-     number of entries = 2;
+     number of entries = 3;
    number of attributes = 0 
 Entries:-
-     #0 (Vgroup)
+     #0 (Vdata)
+	tag = 1962; reference = 3; 
+	number of records = 6; interlace = 0;
+	fields = [a_name, b_name, c_name];
+	record size (in bytes) = 16;
+	name = dset1; class = HDF5;
+	total number of attributes = 0.
+     #1 (Vgroup)
 	tag = 1965;reference = 4;
-	number of entries = 0;
+	number of entries = 2;
 	name = group1; class = HDF5
    number of attributes = 0 
-     #1 (Vgroup)
+     #2 (Vgroup)
 	tag = 1965;reference = 10;
-	number of entries = 0;
+	number of entries = 1;
 	name = group2; class = HDF5
    number of attributes = 0 
 
@@ -22,30 +29,52 @@ Entries:-
 Vgroup:1
      tag = 1965; reference = 4;
      name = group1; class = HDF5;
-     number of entries = 0;
+     number of entries = 2;
    number of attributes = 0 
 Entries:-
-     None.
+     #0 (Vdata)
+	tag = 1962; reference = 5; 
+	number of records = 6; interlace = 0;
+	fields = [int_name, float_name];
+	record size (in bytes) = 8;
+	name = dset2; class = HDF5;
+	total number of attributes = 0.
+     #1 (Vdata)
+	tag = 1962; reference = 7; 
+	number of records = 6; interlace = 0;
+	fields = [int, float];
+	record size (in bytes) = 8;
+	name = dset4; class = HDF5;
+	total number of attributes = 0.
 
 
 Vgroup:2
      tag = 1965; reference = 10;
      name = group2; class = HDF5;
-     number of entries = 0;
+     number of entries = 1;
    number of attributes = 0 
 Entries:-
-     None.
+     #0 (Vdata)
+	tag = 1962; reference = 11; 
+	number of records = 6; interlace = 0;
+	fields = [int, float];
+	record size (in bytes) = 8;
+	name = dset5; class = HDF5;
+	total number of attributes = 0.
 
 
 Graphical representation of the file:-
 (vg#: vgroup;   vd: vdata)
 
-   vg0 	-- vg1 
-	-- vg2 
+   vg0 	-- vd  
+	-- vg1 	-- vd  
+		-- vd  
+	-- vg2 	-- vd  
 
-   vg1 
+   vg1 	-- vd  
+	-- vd  
 
-   vg2 
+   vg2 	-- vd  
 
 File name: testfiles/tcompound2.hdf 
 
diff --git a/tools/testfiles/tcompound2.h5 b/tools/testfiles/tcompound2.h5
index 6df3bf5..4747c4b 100644
--- a/tools/testfiles/tcompound2.h5
+++ b/tools/testfiles/tcompound2.h5
diff --git a/tools/testfiles/tdset-1.ddl b/tools/testfiles/tdset-1.ddl
index c5f4fb6..8eb043e 100644
--- a/tools/testfiles/tdset-1.ddl
+++ b/tools/testfiles/tdset-1.ddl
@@ -23,23 +23,83 @@ GROUP "/" {
    }
    DATASET "dset2" {
       DATATYPE { "H5T_IEEE_F64BE" }
-      DATASPACE { ARRAY ( 30, 10 ) ( 30, 10 ) }
+      DATASPACE { ARRAY ( 30, 20 ) ( 30, 20 ) }
       DATA {
-         0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0,
-         1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1,
-         2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2,
-         3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3,
-         4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4,
-         5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5,
-         6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6,
-         7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7,
-         8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8,
-         9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
-         0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0,
-         1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1,
-         2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2,
-         3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3,
-         4, 5, 6, 7, 8, 9
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019,
+         0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+         0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+         0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+         0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+         0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019
       }
    }
 }
diff --git a/tools/testfiles/tdset-2.ddl b/tools/testfiles/tdset-2.ddl
index 177a10f..735b28a 100644
--- a/tools/testfiles/tdset-2.ddl
+++ b/tools/testfiles/tdset-2.ddl
@@ -21,22 +21,80 @@ DATASET "dset1" {
 }
 DATASET "/dset2" {
    DATATYPE { "H5T_IEEE_F64BE" }
-   DATASPACE { ARRAY ( 30, 10 ) ( 30, 10 ) }
+   DATASPACE { ARRAY ( 30, 20 ) ( 30, 20 ) }
    DATA {
-      0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1,
-      2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3,
-      4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5,
-      6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7,
-      8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
-      0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1,
-      2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3,
-      4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5,
-      6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7,
-      8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
-      0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1,
-      2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3,
-      4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5,
-      6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
+      0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008,
+      0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016,
+      0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005,
+      0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013,
+      0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002,
+      0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001,
+      0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018,
+      0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+      0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+      0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004,
+      0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012,
+      0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001,
+      0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009,
+      0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017,
+      0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006,
+      0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014,
+      0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+      0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+      0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0,
+      0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008,
+      0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016,
+      0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005,
+      0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013,
+      0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002,
+      0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001,
+      0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018,
+      0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+      0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+      0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004,
+      0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012,
+      0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001,
+      0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009,
+      0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017,
+      0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006,
+      0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014,
+      0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+      0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+      0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0,
+      0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008,
+      0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016,
+      0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005,
+      0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013,
+      0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002,
+      0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001,
+      0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018,
+      0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+      0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+      0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004,
+      0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012,
+      0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001,
+      0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009,
+      0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017,
+      0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006,
+      0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014,
+      0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003,
+      0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011,
+      0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0,
+      0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008,
+      0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016,
+      0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005,
+      0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013,
+      0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002,
+      0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001,
+      0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018,
+      0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007,
+      0.0008, 0.0009, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015,
+      0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001, 0.0002, 0.0003, 0.0004,
+      0.0005, 0.0006, 0.0007, 0.0008, 0.0009, 0.001, 0.0011, 0.0012,
+      0.0013, 0.0014, 0.0015, 0.0016, 0.0017, 0.0018, 0.0019, 0, 0.0001,
+      0.0002, 0.0003, 0.0004, 0.0005, 0.0006, 0.0007, 0.0008, 0.0009,
+      0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0017,
+      0.0018, 0.0019
    }
 }
 }
diff --git a/tools/testfiles/tdset.dmp b/tools/testfiles/tdset.dmp
index 2bad835..2f99ad5 100644
--- a/tools/testfiles/tdset.dmp
+++ b/tools/testfiles/tdset.dmp
@@ -4,10 +4,13 @@ File name: testfiles/tdset.hdf
 Vgroup:0
      tag = 1965; reference = 2;
      name = /; class = HDF5;
-     number of entries = 0;
+     number of entries = 2;
    number of attributes = 0 
 Entries:-
-     None.
+     #0 (Numeric Data Group)
+	tag = 720; reference = 3;
+     #1 (Numeric Data Group)
+	tag = 720; reference = 5;
 
 
 Vgroup:1
@@ -163,7 +166,8 @@ Entries:-
 Graphical representation of the file:-
 (vg#: vgroup;   vd: vdata)
 
-   vg0 
+   vg0 	-- Numeric Data Group  
+	-- Numeric Data Group  
 
    vg1 	-- vd  
 
@@ -252,7 +256,7 @@ Vdata: 3
 - field index 0: [Values], type=24, order=1
    number of attributes = 0 
 Loc.     Data
-0        10  ; 
+0        20  ; 
 
 File name: testfiles/tdset.hdf 
 
@@ -305,69 +309,129 @@ Variable Name = dset2
 		 Scale Type = number-type not set
 		 Number of attributes = 0
 	 Dim1: Name=fakeDim3
-		 Size = 10
+		 Size = 20
 		 Scale Type = number-type not set
 		 Number of attributes = 0
 	 Data : 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
-                0.000000 1.000000 2.000000 3.000000 4.000000 5.000000 
-                6.000000 7.000000 8.000000 9.000000 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
+                0.000000 0.000100 0.000200 0.000300 0.000400 0.000500 
+                0.000600 0.000700 0.000800 0.000900 0.001000 0.001100 
+                0.001200 0.001300 0.001400 0.001500 0.001600 0.001700 
+                0.001800 0.001900 
                 
                 
diff --git a/tools/testfiles/tdset.h5 b/tools/testfiles/tdset.h5
index a35040c..9f01348 100644
--- a/tools/testfiles/tdset.h5
+++ b/tools/testfiles/tdset.h5
diff --git a/tools/testfiles/tdset2.dmp b/tools/testfiles/tdset2.dmp
index 58c1601..cf4a7a0 100644
--- a/tools/testfiles/tdset2.dmp
+++ b/tools/testfiles/tdset2.dmp
@@ -4,10 +4,13 @@ File name: testfiles/tdset2.hdf
 Vgroup:0
      tag = 1965; reference = 2;
      name = /; class = HDF5;
-     number of entries = 0;
+     number of entries = 2;
    number of attributes = 0 
 Entries:-
-     None.
+     #0 (Numeric Data Group)
+	tag = 720; reference = 3;
+     #1 (Numeric Data Group)
+	tag = 720; reference = 5;
 
 
 Vgroup:1
@@ -163,7 +166,8 @@ Entries:-
 Graphical representation of the file:-
 (vg#: vgroup;   vd: vdata)
 
-   vg0 
+   vg0 	-- Numeric Data Group  
+	-- Numeric Data Group  
 
    vg1 	-- vd  
 
diff --git a/tools/testfiles/tdset2.h5 b/tools/testfiles/tdset2.h5
index fc1bcaa..1ae7636 100644
--- a/tools/testfiles/tdset2.h5
+++ b/tools/testfiles/tdset2.h5
diff --git a/tools/testfiles/thlink-1.ddl b/tools/testfiles/thlink-1.ddl
index 43f8f3a..7bf0a3a 100644
--- a/tools/testfiles/thlink-1.ddl
+++ b/tools/testfiles/thlink-1.ddl
@@ -3,7 +3,7 @@ Expected output for 'h5dump thlink.h5'
 #############################
 HDF5 "thlink.h5" {
 GROUP "/" {
-   DATASET "dset" {
+   DATASET "dset1" {
       DATATYPE { "H5T_STD_I32BE" }
       DATASPACE { ARRAY ( 5 ) ( 5 ) }
       DATA {
@@ -11,17 +11,17 @@ GROUP "/" {
       }
    }
    GROUP "g1" {
-      GROUP "link1" {
-         DATASET "link3" {
-            HARDLINK { "/dset" }
-         }
+      DATASET "dset2" {
+         HARDLINK { "/dset1" }
       }
-      DATASET "link2" {
-         HARDLINK { "/dset" }
+      GROUP "g1.1" {
+         DATASET "dset3" {
+            HARDLINK { "/dset1" }
+         }
       }
    }
    GROUP "g2" {
-      HARDLINK { "/g1/link1" }
+      HARDLINK { "/g1/g1.1" }
    }
 }
 }
diff --git a/tools/testfiles/thlink-2.ddl b/tools/testfiles/thlink-2.ddl
index fcf85e9..d11b381 100644
--- a/tools/testfiles/thlink-2.ddl
+++ b/tools/testfiles/thlink-2.ddl
@@ -3,16 +3,12 @@ Expected output for 'h5dump -d /g1/link2 /dset /g1/link1/link3 thlink.h5'
 #############################
 HDF5 "thlink.h5" {
 DATASET "/g1/link2" {
-   DATATYPE { "H5T_STD_I32BE" }
-   DATASPACE { ARRAY ( 5 ) ( 5 ) }
-   DATA {
-      0, 1, 2, 3, 4
-   }
+   h5dump error: unable to open /g1/link2
 }
 DATASET "/dset" {
-   HARDLINK { "/g1/link2" }
+   h5dump error: unable to open /dset
 }
 DATASET "/g1/link1/link3" {
-   HARDLINK { "/g1/link2" }
+   h5dump error: unable to open /g1/link1/link3
 }
 }
diff --git a/tools/testfiles/thlink-3.ddl b/tools/testfiles/thlink-3.ddl
index 5522244..ab18d94 100644
--- a/tools/testfiles/thlink-3.ddl
+++ b/tools/testfiles/thlink-3.ddl
@@ -3,16 +3,12 @@ Expected output for 'h5dump -d /dset /g1/link1/link3 /g1/link2 thlink.h5'
 #############################
 HDF5 "thlink.h5" {
 DATASET "/dset" {
-   DATATYPE { "H5T_STD_I32BE" }
-   DATASPACE { ARRAY ( 5 ) ( 5 ) }
-   DATA {
-      0, 1, 2, 3, 4
-   }
+   h5dump error: unable to open /dset
 }
 DATASET "/g1/link1/link3" {
-   HARDLINK { "/dset" }
+   h5dump error: unable to open /g1/link1/link3
 }
 DATASET "/g1/link2" {
-   HARDLINK { "/dset" }
+   h5dump error: unable to open /g1/link2
 }
 }
diff --git a/tools/testfiles/thlink-4.ddl b/tools/testfiles/thlink-4.ddl
index bbdd723..669e8e9 100644
--- a/tools/testfiles/thlink-4.ddl
+++ b/tools/testfiles/thlink-4.ddl
@@ -3,17 +3,17 @@ Expected output for 'h5dump -g /g1 thlink.h5'
 #############################
 HDF5 "thlink.h5" {
 GROUP "/g1" {
-   GROUP "link1" {
-      DATASET "link3" {
-         DATATYPE { "H5T_STD_I32BE" }
-         DATASPACE { ARRAY ( 5 ) ( 5 ) }
-         DATA {
-            0, 1, 2, 3, 4
-         }
+   DATASET "dset2" {
+      DATATYPE { "H5T_STD_I32BE" }
+      DATASPACE { ARRAY ( 5 ) ( 5 ) }
+      DATA {
+         0, 1, 2, 3, 4
       }
    }
-   DATASET "link2" {
-      HARDLINK { "/g1/link1/link3" }
+   GROUP "g1.1" {
+      DATASET "dset3" {
+         HARDLINK { "/g1/dset2" }
+      }
    }
 }
 }
diff --git a/tools/testfiles/thlink-5.ddl b/tools/testfiles/thlink-5.ddl
index 14277cc..9961862 100644
--- a/tools/testfiles/thlink-5.ddl
+++ b/tools/testfiles/thlink-5.ddl
@@ -3,18 +3,18 @@ Expected output for 'h5dump -d /dset -g /g2 -d /g1/link2 thlink.h5'
 #############################
 HDF5 "thlink.h5" {
 DATASET "/dset" {
-   DATATYPE { "H5T_STD_I32BE" }
-   DATASPACE { ARRAY ( 5 ) ( 5 ) }
-   DATA {
-      0, 1, 2, 3, 4
-   }
+   h5dump error: unable to open /dset
 }
 GROUP "/g2" {
-   DATASET "link3" {
-      HARDLINK { "/dset" }
+   DATASET "dset3" {
+      DATATYPE { "H5T_STD_I32BE" }
+      DATASPACE { ARRAY ( 5 ) ( 5 ) }
+      DATA {
+         0, 1, 2, 3, 4
+      }
    }
 }
 DATASET "/g1/link2" {
-   HARDLINK { "/dset" }
+   h5dump error: unable to open /g1/link2
 }
 }
diff --git a/tools/testfiles/thlink.dmp b/tools/testfiles/thlink.dmp
index 74063b1..8f0f34f 100644
--- a/tools/testfiles/thlink.dmp
+++ b/tools/testfiles/thlink.dmp
@@ -4,60 +4,56 @@ File name: testfiles/thlink.hdf
 Vgroup:0
      tag = 1965; reference = 2;
      name = /; class = HDF5;
-     number of entries = 2;
+     number of entries = 3;
    number of attributes = 0 
 Entries:-
-     #0 (Vgroup)
+     #0 (Numeric Data Group)
+	tag = 720; reference = 3;
+     #1 (Vgroup)
 	tag = 1965;reference = 5;
-	number of entries = 1;
+	number of entries = 2;
 	name = g1; class = HDF5
    number of attributes = 0 
-     #1 (Vgroup)
-	tag = 1965;reference = 11;
-	number of entries = 0;
-	name = g2; class = HDF5
+     #2 (Vgroup)
+	tag = 1965;reference = 6;
+	number of entries = 1;
+	name = g1.1; class = HDF5
    number of attributes = 0 
 
 
 Vgroup:1
      tag = 1965; reference = 5;
      name = g1; class = HDF5;
-     number of entries = 1;
+     number of entries = 2;
    number of attributes = 0 
 Entries:-
-     #0 (Vgroup)
+     #0 (Numeric Data Group)
+	tag = 720; reference = 3;
+     #1 (Vgroup)
 	tag = 1965;reference = 6;
-	number of entries = 0;
-	name = link1; class = HDF5
+	number of entries = 1;
+	name = g1.1; class = HDF5
    number of attributes = 0 
 
 
 Vgroup:2
      tag = 1965; reference = 6;
-     name = link1; class = HDF5;
-     number of entries = 0;
+     name = g1.1; class = HDF5;
+     number of entries = 1;
    number of attributes = 0 
 Entries:-
-     None.
+     #0 (Numeric Data Group)
+	tag = 720; reference = 3;
 
 
 Vgroup:3
-     tag = 1965; reference = 11;
-     name = g2; class = HDF5;
-     number of entries = 0;
-   number of attributes = 0 
-Entries:-
-     None.
-
-
-Vgroup:4
-     tag = 1965; reference = 15;
+     tag = 1965; reference = 8;
      name = fakeDim0; class = Dim0.0;
      number of entries = 1;
    number of attributes = 0 
 Entries:-
      #0 (Vdata)
-	tag = 1962; reference = 14; 
+	tag = 1962; reference = 7; 
 	number of records = 1; interlace = 0;
 	fields = [Values];
 	record size (in bytes) = 4;
@@ -65,247 +61,68 @@ Entries:-
 	total number of attributes = 0.
 
 
-Vgroup:5
-     tag = 1965; reference = 17;
-     name = fakeDim1; class = Dim0.0;
-     number of entries = 1;
-   number of attributes = 0 
-Entries:-
-     #0 (Vdata)
-	tag = 1962; reference = 16; 
-	number of records = 1; interlace = 0;
-	fields = [Values];
-	record size (in bytes) = 4;
-	name = fakeDim1; class = DimVal0.1;
-	total number of attributes = 0.
-
-
-Vgroup:6
-     tag = 1965; reference = 19;
-     name = fakeDim2; class = Dim0.0;
-     number of entries = 1;
-   number of attributes = 0 
-Entries:-
-     #0 (Vdata)
-	tag = 1962; reference = 18; 
-	number of records = 1; interlace = 0;
-	fields = [Values];
-	record size (in bytes) = 4;
-	name = fakeDim2; class = DimVal0.1;
-	total number of attributes = 0.
-
-
-Vgroup:7
-     tag = 1965; reference = 21;
-     name = fakeDim3; class = Dim0.0;
-     number of entries = 1;
-   number of attributes = 0 
-Entries:-
-     #0 (Vdata)
-	tag = 1962; reference = 20; 
-	number of records = 1; interlace = 0;
-	fields = [Values];
-	record size (in bytes) = 4;
-	name = fakeDim3; class = DimVal0.1;
-	total number of attributes = 0.
-
-
-Vgroup:8
-     tag = 1965; reference = 23;
-     name = dset; class = Var0.0;
+Vgroup:4
+     tag = 1965; reference = 10;
+     name = dset1; class = Var0.0;
      number of entries = 5;
    number of attributes = 0 
 Entries:-
      #0 (Vgroup)
-	tag = 1965;reference = 15;
+	tag = 1965;reference = 8;
 	number of entries = 1;
 	name = fakeDim0; class = Dim0.0
    number of attributes = 0 
      #1 (Scientific Data)
 	tag = 702; reference = 4;
      #2 (Number type)
-	tag = 106; reference = 22;
+	tag = 106; reference = 9;
      #3 (SciData dimension record)
-	tag = 701; reference = 22;
+	tag = 701; reference = 9;
      #4 (Numeric Data Group)
 	tag = 720; reference = 3;
 
 
-Vgroup:9
-     tag = 1965; reference = 25;
-     name = link3; class = Var0.0;
-     number of entries = 5;
-   number of attributes = 0 
-Entries:-
-     #0 (Vgroup)
-	tag = 1965;reference = 17;
-	number of entries = 1;
-	name = fakeDim1; class = Dim0.0
-   number of attributes = 0 
-     #1 (Scientific Data)
-	tag = 702; reference = 8;
-     #2 (Number type)
-	tag = 106; reference = 24;
-     #3 (SciData dimension record)
-	tag = 701; reference = 24;
-     #4 (Numeric Data Group)
-	tag = 720; reference = 7;
-
-
-Vgroup:10
-     tag = 1965; reference = 27;
-     name = link2; class = Var0.0;
-     number of entries = 5;
-   number of attributes = 0 
-Entries:-
-     #0 (Vgroup)
-	tag = 1965;reference = 19;
-	number of entries = 1;
-	name = fakeDim2; class = Dim0.0
-   number of attributes = 0 
-     #1 (Scientific Data)
-	tag = 702; reference = 10;
-     #2 (Number type)
-	tag = 106; reference = 26;
-     #3 (SciData dimension record)
-	tag = 701; reference = 26;
-     #4 (Numeric Data Group)
-	tag = 720; reference = 9;
-
-
-Vgroup:11
-     tag = 1965; reference = 29;
-     name = link3; class = Var0.0;
-     number of entries = 5;
-   number of attributes = 0 
-Entries:-
-     #0 (Vgroup)
-	tag = 1965;reference = 21;
-	number of entries = 1;
-	name = fakeDim3; class = Dim0.0
-   number of attributes = 0 
-     #1 (Scientific Data)
-	tag = 702; reference = 13;
-     #2 (Number type)
-	tag = 106; reference = 28;
-     #3 (SciData dimension record)
-	tag = 701; reference = 28;
-     #4 (Numeric Data Group)
-	tag = 720; reference = 12;
-
-
-Vgroup:12
-     tag = 1965; reference = 30;
+Vgroup:5
+     tag = 1965; reference = 11;
      name = thlink.hdf; class = CDF0.0;
-     number of entries = 8;
+     number of entries = 2;
    number of attributes = 0 
 Entries:-
      #0 (Vgroup)
-	tag = 1965;reference = 15;
+	tag = 1965;reference = 8;
 	number of entries = 1;
 	name = fakeDim0; class = Dim0.0
    number of attributes = 0 
      #1 (Vgroup)
-	tag = 1965;reference = 17;
-	number of entries = 1;
-	name = fakeDim1; class = Dim0.0
-   number of attributes = 0 
-     #2 (Vgroup)
-	tag = 1965;reference = 19;
-	number of entries = 1;
-	name = fakeDim2; class = Dim0.0
-   number of attributes = 0 
-     #3 (Vgroup)
-	tag = 1965;reference = 21;
-	number of entries = 1;
-	name = fakeDim3; class = Dim0.0
-   number of attributes = 0 
-     #4 (Vgroup)
-	tag = 1965;reference = 23;
-	number of entries = 5;
-	name = dset; class = Var0.0
-   number of attributes = 0 
-     #5 (Vgroup)
-	tag = 1965;reference = 25;
-	number of entries = 5;
-	name = link3; class = Var0.0
-   number of attributes = 0 
-     #6 (Vgroup)
-	tag = 1965;reference = 27;
+	tag = 1965;reference = 10;
 	number of entries = 5;
-	name = link2; class = Var0.0
-   number of attributes = 0 
-     #7 (Vgroup)
-	tag = 1965;reference = 29;
-	number of entries = 5;
-	name = link3; class = Var0.0
+	name = dset1; class = Var0.0
    number of attributes = 0 
 
 
 Graphical representation of the file:-
 (vg#: vgroup;   vd: vdata)
 
-   vg0 	-- vg1 	-- vg2 
-	-- vg3 
-
-   vg1 	-- vg2 
-
-   vg2 
-
-   vg3 
-
-   vg4 	-- vd  
+   vg0 	-- Numeric Data Group  
+	-- vg1 	-- Numeric Data Group  
+		-- vg2 	-- Numeric Data Group  
+	-- vg2 	-- Numeric Data Group  
 
-   vg5 	-- vd  
+   vg1 	-- Numeric Data Group  
+	-- vg2 	-- Numeric Data Group  
 
-   vg6 	-- vd  
+   vg2 	-- Numeric Data Group  
 
-   vg7 	-- vd  
+   vg3 	-- vd  
 
-   vg8 	-- vg4 	-- vd  
+   vg4 	-- vg3 	-- vd  
 	-- Scientific Data  
 	-- Number type  
 	-- SciData dimension record  
 	-- Numeric Data Group  
 
-   vg9 	-- vg5 	-- vd  
-	-- Scientific Data  
-	-- Number type  
-	-- SciData dimension record  
-	-- Numeric Data Group  
-
-   vg10 	-- vg6 	-- vd  
-	-- Scientific Data  
-	-- Number type  
-	-- SciData dimension record  
-	-- Numeric Data Group  
-
-   vg11 	-- vg7 	-- vd  
-	-- Scientific Data  
-	-- Number type  
-	-- SciData dimension record  
-	-- Numeric Data Group  
-
-   vg12 	-- vg4 	-- vd  
-	-- vg5 	-- vd  
-	-- vg6 	-- vd  
-	-- vg7 	-- vd  
-	-- vg8 	-- vg4 	-- vd  
-		-- Scientific Data  
-		-- Number type  
-		-- SciData dimension record  
-		-- Numeric Data Group  
-	-- vg9 	-- vg5 	-- vd  
-		-- Scientific Data  
-		-- Number type  
-		-- SciData dimension record  
-		-- Numeric Data Group  
-	-- vg10 	-- vg6 	-- vd  
-		-- Scientific Data  
-		-- Number type  
-		-- SciData dimension record  
-		-- Numeric Data Group  
-	-- vg9 	-- vg5 	-- vd  
+   vg5 	-- vg3 	-- vd  
+	-- vg4 	-- vg3 	-- vd  
 		-- Scientific Data  
 		-- Number type  
 		-- SciData dimension record  
@@ -314,7 +131,7 @@ Graphical representation of the file:-
 File name: testfiles/thlink.hdf 
 
 Vdata: 0
-   tag = 1962; reference = 14;
+   tag = 1962; reference = 7;
    number of records = 1; interlace = 0;
    fields = [Values];
    record size (in bytes) = 4;
@@ -325,45 +142,9 @@ Vdata: 0
 Loc.     Data
 0        5  ; 
 
-Vdata: 1
-   tag = 1962; reference = 16;
-   number of records = 1; interlace = 0;
-   fields = [Values];
-   record size (in bytes) = 4;
-   name = fakeDim1; class = DimVal0.1;
-   number of attributes = 0 
-- field index 0: [Values], type=24, order=1
-   number of attributes = 0 
-Loc.     Data
-0        5  ; 
-
-Vdata: 2
-   tag = 1962; reference = 18;
-   number of records = 1; interlace = 0;
-   fields = [Values];
-   record size (in bytes) = 4;
-   name = fakeDim2; class = DimVal0.1;
-   number of attributes = 0 
-- field index 0: [Values], type=24, order=1
-   number of attributes = 0 
-Loc.     Data
-0        5  ; 
-
-Vdata: 3
-   tag = 1962; reference = 20;
-   number of records = 1; interlace = 0;
-   fields = [Values];
-   record size (in bytes) = 4;
-   name = fakeDim3; class = DimVal0.1;
-   number of attributes = 0 
-- field index 0: [Values], type=24, order=1
-   number of attributes = 0 
-Loc.     Data
-0        5  ; 
-
 File name: testfiles/thlink.hdf 
 
-Variable Name = dset
+Variable Name = dset1
 	 Index = 0
 	 Type= 32-bit signed integer
 	 Ref. = 3
@@ -376,45 +157,3 @@ Variable Name = dset
 	 Data : 
                 0 1 2 3 4 
 
-
-Variable Name = link3
-	 Index = 1
-	 Type= 32-bit signed integer
-	 Ref. = 7
-	 Rank = 1
-	 Number of attributes = 0
-	 Dim0: Name=fakeDim1
-		 Size = 5
-		 Scale Type = number-type not set
-		 Number of attributes = 0
-	 Data : 
-                0 1 2 3 4 
-
-
-Variable Name = link2
-	 Index = 2
-	 Type= 32-bit signed integer
-	 Ref. = 9
-	 Rank = 1
-	 Number of attributes = 0
-	 Dim0: Name=fakeDim2
-		 Size = 5
-		 Scale Type = number-type not set
-		 Number of attributes = 0
-	 Data : 
-                0 1 2 3 4 
-
-
-Variable Name = link3
-	 Index = 3
-	 Type= 32-bit signed integer
-	 Ref. = 12
-	 Rank = 1
-	 Number of attributes = 0
-	 Dim0: Name=fakeDim3
-		 Size = 5
-		 Scale Type = number-type not set
-		 Number of attributes = 0
-	 Data : 
-                0 1 2 3 4 
-
diff --git a/tools/testfiles/thlink.h5 b/tools/testfiles/thlink.h5
index 49ebeb5..e514402 100644
--- a/tools/testfiles/thlink.h5
+++ b/tools/testfiles/thlink.h5
diff --git a/tools/testfiles/tloop.h5 b/tools/testfiles/tloop.h5
new file mode 100644
index 0000000..12390fd
--- /dev/null
+++ b/tools/testfiles/tloop.h5
diff --git a/tools/testfiles/tloop2.h5 b/tools/testfiles/tloop2.h5
new file mode 100644
index 0000000..c54411e
--- /dev/null
+++ b/tools/testfiles/tloop2.h5
diff --git a/tools/testfiles/tmany.dmp b/tools/testfiles/tmany.dmp
new file mode 100644
index 0000000..b9ba9cd
--- /dev/null
+++ b/tools/testfiles/tmany.dmp
@@ -0,0 +1,533 @@
+File name: testfiles/tmany.hdf 
+
+
+Vgroup:0
+     tag = 1965; reference = 2;
+     name = /; class = HDF5;
+     number of entries = 6;
+   number of attributes = 0 
+Entries:-
+     #0 (Vgroup)
+	tag = 1965;reference = 3;
+	number of entries = 2;
+	name = g1; class = HDF5
+   number of attributes = 0 
+     #1 (Vgroup)
+	tag = 1965;reference = 10;
+	number of entries = 1;
+	name = g2; class = HDF5
+   number of attributes = 0 
+     #2 (Vgroup)
+	tag = 1965;reference = 11;
+	number of entries = 1;
+	name = g3; class = HDF5
+   number of attributes = 0 
+     #3 (Vgroup)
+	tag = 1965;reference = 14;
+	number of entries = 1;
+	name = g4; class = HDF5
+   number of attributes = 0 
+     #4 (Vgroup)
+	tag = 1965;reference = 15;
+	number of entries = 1;
+	name = g5; class = HDF5
+   number of attributes = 0 
+     #5 (Vgroup)
+	tag = 1965;reference = 18;
+	number of entries = 1;
+	name = g6; class = HDF5
+   number of attributes = 0 
+
+
+Vgroup:1
+     tag = 1965; reference = 3;
+     name = g1; class = HDF5;
+     number of entries = 2;
+   number of attributes = 0 
+Entries:-
+     #0 (Vgroup)
+	tag = 1965;reference = 4;
+	number of entries = 1;
+	name = g1.1; class = HDF5
+   number of attributes = 0 
+     #1 (Vgroup)
+	tag = 1965;reference = 9;
+	number of entries = 1;
+	name = g1.2; class = HDF5
+   number of attributes = 0 
+
+
+Vgroup:2
+     tag = 1965; reference = 4;
+     name = g1.1; class = HDF5;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Vdata)
+	tag = 1962; reference = 5; 
+	number of records = 6; interlace = 0;
+	fields = [a_array, b_array, c_array];
+	record size (in bytes) = 320;
+	name = dset1; class = HDF5;
+	total number of attributes = 3.
+
+
+Vgroup:3
+     tag = 1965; reference = 9;
+     name = g1.2; class = HDF5;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Vdata)
+	tag = 1962; reference = 5; 
+	number of records = 6; interlace = 0;
+	fields = [a_array, b_array, c_array];
+	record size (in bytes) = 320;
+	name = dset1; class = HDF5;
+	total number of attributes = 3.
+
+
+Vgroup:4
+     tag = 1965; reference = 10;
+     name = g2; class = HDF5;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Vgroup)
+	tag = 1965;reference = 3;
+	number of entries = 2;
+	name = g1; class = HDF5
+   number of attributes = 0 
+
+
+Vgroup:5
+     tag = 1965; reference = 11;
+     name = g3; class = HDF5;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Numeric Data Group)
+	tag = 720; reference = 12;
+
+
+Vgroup:6
+     tag = 1965; reference = 14;
+     name = g4; class = HDF5;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Numeric Data Group)
+	tag = 720; reference = 12;
+
+
+Vgroup:7
+     tag = 1965; reference = 15;
+     name = g5; class = HDF5;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Numeric Data Group)
+	tag = 720; reference = 16;
+
+
+Vgroup:8
+     tag = 1965; reference = 18;
+     name = g6; class = HDF5;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Numeric Data Group)
+	tag = 720; reference = 16;
+
+
+Vgroup:9
+     tag = 1965; reference = 20;
+     name = fakeDim0; class = Dim0.0;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Vdata)
+	tag = 1962; reference = 19; 
+	number of records = 1; interlace = 0;
+	fields = [Values];
+	record size (in bytes) = 4;
+	name = fakeDim0; class = DimVal0.1;
+	total number of attributes = 0.
+
+
+Vgroup:10
+     tag = 1965; reference = 22;
+     name = fakeDim1; class = Dim0.0;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Vdata)
+	tag = 1962; reference = 21; 
+	number of records = 1; interlace = 0;
+	fields = [Values];
+	record size (in bytes) = 4;
+	name = fakeDim1; class = DimVal0.1;
+	total number of attributes = 0.
+
+
+Vgroup:11
+     tag = 1965; reference = 24;
+     name = fakeDim2; class = Dim0.0;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Vdata)
+	tag = 1962; reference = 23; 
+	number of records = 1; interlace = 0;
+	fields = [Values];
+	record size (in bytes) = 4;
+	name = fakeDim2; class = DimVal0.1;
+	total number of attributes = 0.
+
+
+Vgroup:12
+     tag = 1965; reference = 26;
+     name = fakeDim3; class = Dim0.0;
+     number of entries = 1;
+   number of attributes = 0 
+Entries:-
+     #0 (Vdata)
+	tag = 1962; reference = 25; 
+	number of records = 1; interlace = 0;
+	fields = [Values];
+	record size (in bytes) = 4;
+	name = fakeDim3; class = DimVal0.1;
+	total number of attributes = 0.
+
+
+Vgroup:13
+     tag = 1965; reference = 28;
+     name = link3; class = Var0.0;
+     number of entries = 6;
+   number of attributes = 0 
+Entries:-
+     #0 (Vgroup)
+	tag = 1965;reference = 20;
+	number of entries = 1;
+	name = fakeDim0; class = Dim0.0
+   number of attributes = 0 
+     #1 (Vgroup)
+	tag = 1965;reference = 22;
+	number of entries = 1;
+	name = fakeDim1; class = Dim0.0
+   number of attributes = 0 
+     #2 (Scientific Data)
+	tag = 702; reference = 13;
+     #3 (Number type)
+	tag = 106; reference = 27;
+     #4 (SciData dimension record)
+	tag = 701; reference = 27;
+     #5 (Numeric Data Group)
+	tag = 720; reference = 12;
+
+
+Vgroup:14
+     tag = 1965; reference = 30;
+     name = slink4; class = Var0.0;
+     number of entries = 6;
+   number of attributes = 0 
+Entries:-
+     #0 (Vgroup)
+	tag = 1965;reference = 24;
+	number of entries = 1;
+	name = fakeDim2; class = Dim0.0
+   number of attributes = 0 
+     #1 (Vgroup)
+	tag = 1965;reference = 26;
+	number of entries = 1;
+	name = fakeDim3; class = Dim0.0
+   number of attributes = 0 
+     #2 (Scientific Data)
+	tag = 702; reference = 17;
+     #3 (Number type)
+	tag = 106; reference = 29;
+     #4 (SciData dimension record)
+	tag = 701; reference = 29;
+     #5 (Numeric Data Group)
+	tag = 720; reference = 16;
+
+
+Vgroup:15
+     tag = 1965; reference = 31;
+     name = tmany.hdf; class = CDF0.0;
+     number of entries = 6;
+   number of attributes = 0 
+Entries:-
+     #0 (Vgroup)
+	tag = 1965;reference = 20;
+	number of entries = 1;
+	name = fakeDim0; class = Dim0.0
+   number of attributes = 0 
+     #1 (Vgroup)
+	tag = 1965;reference = 22;
+	number of entries = 1;
+	name = fakeDim1; class = Dim0.0
+   number of attributes = 0 
+     #2 (Vgroup)
+	tag = 1965;reference = 24;
+	number of entries = 1;
+	name = fakeDim2; class = Dim0.0
+   number of attributes = 0 
+     #3 (Vgroup)
+	tag = 1965;reference = 26;
+	number of entries = 1;
+	name = fakeDim3; class = Dim0.0
+   number of attributes = 0 
+     #4 (Vgroup)
+	tag = 1965;reference = 28;
+	number of entries = 6;
+	name = link3; class = Var0.0
+   number of attributes = 0 
+     #5 (Vgroup)
+	tag = 1965;reference = 30;
+	number of entries = 6;
+	name = slink4; class = Var0.0
+   number of attributes = 0 
+
+
+Graphical representation of the file:-
+(vg#: vgroup;   vd: vdata)
+
+   vg0 	-- vg1 	-- vg2 	-- vd  
+		-- vg3 	-- vd  
+	-- vg4 	-- vg1 	-- vg2 	-- vd  
+			-- vg3 	-- vd  
+	-- vg5 	-- Numeric Data Group  
+	-- vg6 	-- Numeric Data Group  
+	-- vg7 	-- Numeric Data Group  
+	-- vg8 	-- Numeric Data Group  
+
+   vg1 	-- vg2 	-- vd  
+	-- vg3 	-- vd  
+
+   vg2 	-- vd  
+
+   vg3 	-- vd  
+
+   vg4 	-- vg1 	-- vg2 	-- vd  
+		-- vg3 	-- vd  
+
+   vg5 	-- Numeric Data Group  
+
+   vg6 	-- Numeric Data Group  
+
+   vg7 	-- Numeric Data Group  
+
+   vg8 	-- Numeric Data Group  
+
+   vg9 	-- vd  
+
+   vg10 	-- vd  
+
+   vg11 	-- vd  
+
+   vg12 	-- vd  
+
+   vg13 	-- vg9 	-- vd  
+	-- vg10 	-- vd  
+	-- Scientific Data  
+	-- Number type  
+	-- SciData dimension record  
+	-- Numeric Data Group  
+
+   vg14 	-- vg11 	-- vd  
+	-- vg12 	-- vd  
+	-- Scientific Data  
+	-- Number type  
+	-- SciData dimension record  
+	-- Numeric Data Group  
+
+   vg15 	-- vg9 	-- vd  
+	-- vg10 	-- vd  
+	-- vg11 	-- vd  
+	-- vg12 	-- vd  
+	-- vg13 	-- vg9 	-- vd  
+		-- vg10 	-- vd  
+		-- Scientific Data  
+		-- Number type  
+		-- SciData dimension record  
+		-- Numeric Data Group  
+	-- vg14 	-- vg11 	-- vd  
+		-- vg12 	-- vd  
+		-- Scientific Data  
+		-- Number type  
+		-- SciData dimension record  
+		-- Numeric Data Group  
+
+File name: testfiles/tmany.hdf 
+
+Vdata: 0
+   tag = 1962; reference = 5;
+   number of records = 6; interlace = 0;
+   fields = [a_array, b_array, c_array];
+   record size (in bytes) = 320;
+   name = dset1; class = HDF5;
+   number of attributes = 3 
+    attr0: name=attr1 type=20 count=10 size=10
+	97 98 99 100 101 102 103 104 105 0 
+    attr1: name=attr2 type=24 count=4 size=16
+	0 1 2 3 
+    attr2: name=attr3 type=6 count=10 size=80
+	0.000000 0.100000 0.200000 0.300000 0.400000 0.500000 0.600000 
+	0.700000 0.800000 0.900000 
+- field index 0: [a_array], type=24, order=16
+   number of attributes = 0 
+- field index 1: [b_array], type=6, order=16
+   number of attributes = 0 
+- field index 2: [c_array], type=6, order=16
+   number of attributes = 0 
+Loc.     Data
+0        0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1  0.000000 1.000000 0.000000 1.000000 0.000000 1.000000 0.000000 1.000000 0.000000 1.000000 0.000000 1.000000 0.000000 1.000000 0.000000 1.000000  6.000000 7.000000 6.000000 7.000000 6.000000 7.000000 6.000000 7.000000 6.000000 7.000000 6.000000 7.000000 6.000000 7.000000 6.000000 7.000000  ; 
+1        1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2  1.000000 2.000000 1.000000 2.000000 1.000000 2.000000 1.000000 2.000000 1.000000 2.000000 1.000000 2.000000 1.000000 2.000000 1.000000 2.000000  7.000000 8.000000 7.000000 8.000000 7.000000 8.000000 7.000000 8.000000 7.000000 8.000000 7.000000 8.000000 7.000000 8.000000 7.000000 8.000000  ; 
+2        2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3  2.000000 3.000000 2.000000 3.000000 2.000000 3.000000 2.000000 3.000000 2.000000 3.000000 2.000000 3.000000 2.000000 3.000000 2.000000 3.000000  8.000000 9.000000 8.000000 9.000000 8.000000 9.000000 8.000000 9.000000 8.000000 9.000000 8.000000 9.000000 8.000000 9.000000 8.000000 9.000000  ; 
+3        3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4  3.000000 4.000000 3.000000 4.000000 3.000000 4.000000 3.000000 4.000000 3.000000 4.000000 3.000000 4.000000 3.000000 4.000000 3.000000 4.000000  9.000000 10.000000 9.000000 10.000000 9.000000 10.000000 9.000000 10.000000 9.000000 10.000000 9.000000 10.000000 9.000000 10.000000 9.000000 10.000000  ; 
+4        4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5  4.000000 5.000000 4.000000 5.000000 4.000000 5.000000 4.000000 5.000000 4.000000 5.000000 4.000000 5.000000 4.000000 5.000000 4.000000 5.000000  10.000000 11.000000 10.000000 11.000000 10.000000 11.000000 10.000000 11.000000 10.000000 11.000000 10.000000 11.000000 10.000000 11.000000 10.000000 11.000000  ; 
+5        5 6 5 6 5 6 5 6 5 6 5 6 5 6 5 6  5.000000 6.000000 5.000000 6.000000 5.000000 6.000000 5.000000 6.000000 5.000000 6.000000 5.000000 6.000000 5.000000 6.000000 5.000000 6.000000  11.000000 12.000000 11.000000 12.000000 11.000000 12.000000 11.000000 12.000000 11.000000 12.000000 11.000000 12.000000 11.000000 12.000000 11.000000 12.000000  ; 
+
+
+Vdata: 1
+   tag = 1962; reference = 6;
+   number of records = 1; interlace = 0;
+   fields = [VALUES];
+   record size (in bytes) = 10;
+   name = attr1; class = Attr0.0;
+   number of attributes = 0 
+- field index 0: [VALUES], type=20, order=10
+   number of attributes = 0 
+Loc.     Data
+0        97 98 99 100 101 102 103 104 105 0  ; 
+
+Vdata: 2
+   tag = 1962; reference = 7;
+   number of records = 1; interlace = 0;
+   fields = [VALUES];
+   record size (in bytes) = 16;
+   name = attr2; class = Attr0.0;
+   number of attributes = 0 
+- field index 0: [VALUES], type=24, order=4
+   number of attributes = 0 
+Loc.     Data
+0        0 1 2 3  ; 
+
+Vdata: 3
+   tag = 1962; reference = 8;
+   number of records = 1; interlace = 0;
+   fields = [VALUES];
+   record size (in bytes) = 80;
+   name = attr3; class = Attr0.0;
+   number of attributes = 0 
+- field index 0: [VALUES], type=6, order=10
+   number of attributes = 0 
+Loc.     Data
+0        0.000000 0.100000 0.200000 0.300000 0.400000 0.500000 0.600000 0.700000 0.800000 0.900000  ; 
+
+Vdata: 4
+   tag = 1962; reference = 19;
+   number of records = 1; interlace = 0;
+   fields = [Values];
+   record size (in bytes) = 4;
+   name = fakeDim0; class = DimVal0.1;
+   number of attributes = 0 
+- field index 0: [Values], type=24, order=1
+   number of attributes = 0 
+Loc.     Data
+0        10  ; 
+
+Vdata: 5
+   tag = 1962; reference = 21;
+   number of records = 1; interlace = 0;
+   fields = [Values];
+   record size (in bytes) = 4;
+   name = fakeDim1; class = DimVal0.1;
+   number of attributes = 0 
+- field index 0: [Values], type=24, order=1
+   number of attributes = 0 
+Loc.     Data
+0        10  ; 
+
+Vdata: 6
+   tag = 1962; reference = 23;
+   number of records = 1; interlace = 0;
+   fields = [Values];
+   record size (in bytes) = 4;
+   name = fakeDim2; class = DimVal0.1;
+   number of attributes = 0 
+- field index 0: [Values], type=24, order=1
+   number of attributes = 0 
+Loc.     Data
+0        10  ; 
+
+Vdata: 7
+   tag = 1962; reference = 25;
+   number of records = 1; interlace = 0;
+   fields = [Values];
+   record size (in bytes) = 4;
+   name = fakeDim3; class = DimVal0.1;
+   number of attributes = 0 
+- field index 0: [Values], type=24, order=1
+   number of attributes = 0 
+Loc.     Data
+0        10  ; 
+
+File name: testfiles/tmany.hdf 
+
+Variable Name = link3
+	 Index = 0
+	 Type= 32-bit signed integer
+	 Ref. = 12
+	 Rank = 2
+	 Number of attributes = 0
+	 Dim0: Name=fakeDim0
+		 Size = 10
+		 Scale Type = number-type not set
+		 Number of attributes = 0
+	 Dim1: Name=fakeDim1
+		 Size = 10
+		 Scale Type = number-type not set
+		 Number of attributes = 0
+	 Data : 
+                0 1 2 3 4 5 6 7 8 9 
+                0 1 2 3 4 5 6 7 8 9 
+                0 1 2 3 4 5 6 7 8 9 
+                0 1 2 3 4 5 6 7 8 9 
+                0 1 2 3 4 5 6 7 8 9 
+                0 1 2 3 4 5 6 7 8 9 
+                0 1 2 3 4 5 6 7 8 9 
+                0 1 2 3 4 5 6 7 8 9 
+                0 1 2 3 4 5 6 7 8 9 
+                0 1 2 3 4 5 6 7 8 9 
+                
+                
+
+Variable Name = slink4
+	 Index = 1
+	 Type= 32-bit signed integer
+	 Ref. = 16
+	 Rank = 2
+	 Number of attributes = 0
+	 Dim0: Name=fakeDim2
+		 Size = 10
+		 Scale Type = number-type not set
+		 Number of attributes = 0
+	 Dim1: Name=fakeDim3
+		 Size = 10
+		 Scale Type = number-type not set
+		 Number of attributes = 0
+	 Data : 
+                0 0 0 0 0 0 0 0 0 0 
+                1 1 1 1 1 1 1 1 1 1 
+                2 2 2 2 2 2 2 2 2 2 
+                3 3 3 3 3 3 3 3 3 3 
+                4 4 4 4 4 4 4 4 4 4 
+                5 5 5 5 5 5 5 5 5 5 
+                6 6 6 6 6 6 6 6 6 6 
+                7 7 7 7 7 7 7 7 7 7 
+                8 8 8 8 8 8 8 8 8 8 
+                9 9 9 9 9 9 9 9 9 9 
+                
+                
diff --git a/tools/testfiles/tmany.h5 b/tools/testfiles/tmany.h5
new file mode 100644
index 0000000..c152f4c
--- /dev/null
+++ b/tools/testfiles/tmany.h5