update mask

8 files changed, 173 insertions, 12 deletions

diff --git a/ds9/doc/ref/command.html b/ds9/doc/ref/command.html
index 209e0b9..33e438a 100644
--- a/ds9/doc/ref/command.html
+++ b/ds9/doc/ref/command.html
@@ -448,6 +448,7 @@
         [&lt;ref&gt;] [export sb|tsv &lt;filename&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [&lt;ref&gt;] [filter &lt;string&gt;]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
         [filter load &lt;filename&gt;]</tt><tt><br>
@@ -460,10 +461,11 @@
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
         [&lt;ref&gt;] [match]</tt><tt><br>
       </tt><tt> </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt>
-      </tt><tt>[&lt;ref&gt;]
-        [match error &lt;value&gt; degrees|arcmin|arcsec]</tt><tt><br>
+      </tt><tt>[&lt;ref&gt;] [match error &lt;value&gt;
+        degrees|arcmin|arcsec]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt>
       </tt><tt>[&lt;ref&gt;] [match function 1and2|1not2|2not1]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt>
@@ -476,6 +478,7 @@
         [name &lt;object&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [&lt;ref&gt;] [panto yes|no]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
         [&lt;ref&gt;] [plot &lt;xcol&gt; &lt;ycol&gt; &lt;xerrcol&gt;
@@ -500,6 +503,7 @@
         [samp send &lt;application&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [&lt;ref&gt;] [save &lt;filename&gt;]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
         [&lt;ref&gt;] [server</tt><tt> </tt><tt>cds|adac|cadc|cambridge|sao|ukirt|iucaa|bejing|saao]</tt><tt><br>
@@ -524,10 +528,12 @@
         [&lt;ref&gt;] [symbol shape circle|ellipse|box|text|point]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[&lt;ref&gt;]
 
+
         [symbol shape</tt><tt> </tt><tt>circle point|box point|diamond
         point|</tt><tt>cross point|x point|arrow point|boxcircle point]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [&lt;ref&gt;] [symbol add| [#] remove]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
         [symbol save|load &lt;filename&gt;]</tt><tt><br>
@@ -574,6 +580,7 @@
       </tt><tt> </tt><tt> </tt><tt>$ds9 -catalog name m51</tt><tt><br>
       </tt><tt> $ds9 -catalog panto no</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>$ds9 -catalog plot</tt><tt> </tt><tt>'\$Jmag'
+
         '\$Hmag' '\$e_Jmag' '\$e_Hmag'</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>$ds9 -catalog print</tt><tt><br>
       </tt><tt> </tt><tt>$ds9 -catalog psky fk5</tt><tt><br>
@@ -666,6 +673,7 @@
       </tt> <tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
           [match]<br>
           &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock
           [yes|no]]</tt><br>
@@ -797,6 +805,7 @@
 [match
 
 
+
         &lt;coordsys&gt;]<br>
         &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [lock
         &lt;coordsys&gt;|none]</tt><br>
@@ -957,6 +966,7 @@
       </tt> <tt><tt><tt><tt>$ds9 -envi foo.hdr</tt></tt><tt><tt><tt><tt><tt><tt><br>
                     </tt></tt></tt></tt></tt></tt></tt></tt> <tt><tt>$ds9
 
+
           -envi foo.hdr foo.bsq</tt></tt><tt><tt><tt><tt><tt><tt><br>
                 </tt></tt></tt></tt></tt></tt>
       <p><b><a name="exit" id="exit"></a>exit<br>
@@ -987,9 +997,11 @@
       </tt><tt> </tt><tt>-export envi &lt;header&gt; [&lt;filename&gt;]</tt><tt>
       </tt><tt>[big|little</tt><tt>|native]</tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>-export &lt;filename&gt;</tt><tt>.jpeg
+
         [1-100]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>-export &lt;filename&gt;</tt><tt>.tiff
 
+
         [none|jpeg|packbits|deflate]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;</tt><tt><br>
       </tt><tt> Example:</tt><tt><br>
@@ -1425,7 +1437,8 @@
       <p>Controls mask parameters.</p>
       <tt>Syntax:<br>
         -mask [color &lt;color&gt;]<br>
-        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [mark 1|0]<br>
+        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [mark zero|nonzero|range]<br>
+        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [range &lt;low&gt; &lt;high&gt;]<br>
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [transparency &lt;value&gt;]<br>
       </tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [system
             &lt;coordsys&gt;]<br>
@@ -1435,7 +1448,8 @@
         &nbsp;<br>
         Example:<br>
         $ds9 -mask color red<br>
-        $ds9 -mask mark 0<br>
+        $ds9 -mask mark zero<br>
+        $ds9 -mask range 10 100<br>
         $ds9 -mask transparency 50<br>
         $ds9 -mask system wcs<br>
         $ds9 -mask clear<br>
@@ -1450,8 +1464,10 @@
         &lt;coordsys&gt;]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[crosshair
 
+
         &lt;coordsys&gt;]</tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
         [crop &lt;coordsys&gt;]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [slice
         &lt;coordsys&gt;]</tt><tt><br>
@@ -1463,6 +1479,7 @@
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [block]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [smooth]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
         [3d]</tt><tt><br>
       </tt><tt> &nbsp;</tt><tt><br>
       </tt><tt> Example:</tt><tt><br>
@@ -1580,14 +1597,17 @@
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
         [pan]<br>
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
         [crosshair]<br>
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
         [open|close]<br>
         &nbsp;<br>
         Example:<br>
@@ -1696,6 +1716,7 @@
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
         [yes|open]<br>
         &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
         [no|close]<br>
@@ -1725,6 +1746,7 @@
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># existing plot</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>-plot</tt><tt> </tt><tt>[[&lt;plotname&gt;]
+
         load &lt;filename&gt; xy|xyex|xyey|xyexey]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp; &nbsp;&nbsp;
         [[&lt;plotname&gt;] save &lt;filename&gt;]</tt><tt><br>
@@ -1738,6 +1760,7 @@
       </tt><tt>[[&lt;plotname&gt;] list yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp; &nbsp; &nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         loadconfig &lt;filename&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp; &nbsp; &nbsp;
         [[&lt;plotname&gt;] saveconfig &lt;filename&gt;]</tt><tt><br>
@@ -1758,8 +1781,10 @@
         [[&lt;plotname&gt;] print color rgb|gray]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp; &nbsp; &nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         close</tt><tt>]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp; &nbsp; &nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
+
         mode pointer|zoom]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># configure graph</tt><tt><br>
@@ -1779,6 +1804,7 @@
         [[&lt;plotname&gt;] axis x|y format &lt;string&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp; &nbsp; &nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         legend yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp; &nbsp;&nbsp;
         [[&lt;plotname&gt;] legend position right|left|top|bottom]</tt><tt><br>
@@ -1800,6 +1826,7 @@
         [[&lt;plotname&gt;] title x|y &lt;string&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp; &nbsp;&nbsp; [</tt><tt>[&lt;plotname&gt;]
 
+
         barmode normal|stacked|aligned|overlap]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># configure current dataset</tt><tt><br>
@@ -1981,6 +2008,7 @@
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [filename
         &lt;filename&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
         [color rgb|cmyk|gray]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [level 1|2]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [resolution
@@ -2261,6 +2289,7 @@
 &lt;filename&gt;
 
 
+
         [image|table|slice]</tt><br>
       <tt>&nbsp;<br>
         Example:<br>
@@ -2377,6 +2406,7 @@
         [coordinate &lt;ra&gt; &lt;dec&gt; &lt;coordsys&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[&lt;ref&gt;]
 
+
         [crosshair]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [export
         sb|tsv &lt;filename&gt;]</tt><tt><br>
@@ -2398,6 +2428,7 @@
         [&lt;ref&gt;] [system &lt;coordsys&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[&lt;ref&gt;]
 
+
         [update]</tt><tt><br>
       </tt><tt> </tt><tt><br>
       </tt><tt> Example:</tt><tt><br>
@@ -2506,15 +2537,18 @@
             </tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
                   [sigma &lt;value&gt;]<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
                   [sigmaminor &lt;value&gt;]<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 [angle
 
 
+
                       &lt;value&gt;]<br>
                     </tt></tt></tt></tt></tt></tt></tt>
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [match]<br>
@@ -2533,9 +2567,11 @@
 -smooth
 
 
+
                   sigmaminor 2.0<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt>$ds9
 
+
                       -smooth angle 45<br>
                     </tt></tt></tt></tt></tt></tt></tt> $ds9 -smooth
         match<br>
diff --git a/ds9/doc/ref/samp.html b/ds9/doc/ref/samp.html
index 43a0314..e9d4a4a 100644
--- a/ds9/doc/ref/samp.html
+++ b/ds9/doc/ref/samp.html
@@ -463,6 +463,7 @@
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [</tt><tt>ua2|ub1|</tt><tt>ucac2|ucac2sup|ucac3|ucac4|urat1]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [2mass|iras]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
         [csc|xmm|rosat]</tt><tt><br>
@@ -502,6 +503,7 @@
         [&lt;ref&gt;] [export sb|tsv &lt;filename&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [&lt;ref&gt;] [filter &lt;string&gt;]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
         [filter load &lt;filename&gt;]</tt><tt><br>
@@ -514,10 +516,11 @@
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
         [&lt;ref&gt;] [match &lt;ref&gt; &lt;ref&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt>
-      </tt><tt>[&lt;ref&gt;]
-        [match error &lt;value&gt; degrees|arcmin|arcsec]</tt><tt><br>
+      </tt><tt>[&lt;ref&gt;] [match error &lt;value&gt;
+        degrees|arcmin|arcsec]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt>
       </tt><tt>[&lt;ref&gt;] [match function 1and2|1not2|2not1]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt>
@@ -530,6 +533,7 @@
         [name &lt;object&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [&lt;ref&gt;] [panto yes|no]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
         [&lt;ref&gt;] [plot &lt;xcol&gt; &lt;ycol&gt; &lt;xerrcol&gt;
@@ -554,6 +558,7 @@
         [samp send &lt;application&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [&lt;ref&gt;] [save &lt;filename&gt;]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
         [&lt;ref&gt;] [server</tt><tt> </tt><tt>cds|adac|cadc|cambridge|sao|ukirt|iucaa|bejing|saao]</tt><tt><br>
@@ -579,6 +584,7 @@
         circle|ellipse|box|text|point]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[&lt;ref&gt;]
 
+
         [symbol shape</tt><tt> </tt><tt>circle point|box point|diamond
         point|</tt><tt>cross point|x point|arrow point|boxcircle point]</tt><tt><br>
       </tt><tt> </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -633,6 +639,7 @@
       </tt><tt> </tt><tt> </tt><tt>catalog name m51</tt><tt><br>
       </tt><tt> catalog panto no</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>catalog plot</tt><tt> </tt><tt>{$Jmag}
+
         {$Hmag} {$e_Jmag} {$e_Hmag}</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>catalog print</tt><tt><br>
       </tt><tt> </tt><tt>catalog psky fk5</tt><tt><br>
@@ -648,6 +655,7 @@
       </tt><tt> </tt><tt>catalog radius 1 degrees</tt><tt><br>
       </tt><tt> </tt><tt>catalog symbol condition</tt><tt> </tt><tt>{$Jmag&gt;15}</tt><tt><br>
       </tt><tt> </tt><tt>catalog symbol 2 shape</tt><tt> </tt><tt>{boxcircle
+
         point}</tt><tt><br>
       </tt><tt> </tt><tt>catalog symbol color red</tt><tt><br>
       </tt><tt> catalog symbol font times</tt><tt><br>
@@ -789,6 +797,7 @@
           levels &lt;filename&gt;]<br>
         </tt></tt> <tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
             [save levels &lt;filename&gt;]<br>
           </tt></tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [copy]<br>
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [paste
@@ -870,6 +879,7 @@
         &lt;coordsys&gt;|none]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [reset]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [3d</tt><tt> </tt><tt>zmin
+
         zmax &lt;coordsys&gt;]</tt><tt><br>
       </tt><tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]</tt><tt><br>
       </tt><tt> &nbsp;</tt><tt><br>
@@ -1604,6 +1614,7 @@
           href="file:///Users/joye/saods9/doc/ref/analysis.html#macros">Analysis
 
 
+
           Macros</a> for more information.</p>
       <tt>Syntax:<br>
         iexam []<br>
@@ -1743,7 +1754,8 @@
       <p>Controls mask parameters.</p>
       <tt>Syntax:<br>
         mask [color &lt;color&gt;]<br>
-        &nbsp;&nbsp;&nbsp;&nbsp; [mark 1|0]<br>
+        &nbsp;&nbsp;&nbsp;&nbsp; [mark zero|nonzero|range]<br>
+        &nbsp;&nbsp;&nbsp;&nbsp; [range &lt;low&gt; &lt;high&gt;]<br>
         &nbsp;&nbsp;&nbsp;&nbsp; [transparency &lt;value&gt;]<br>
         &nbsp;&nbsp;&nbsp;&nbsp; [system &lt;coordsys&gt;]<br>
         &nbsp;&nbsp;&nbsp;&nbsp; [clear]<br>
@@ -1753,11 +1765,13 @@
         string value = ds9.get(string cmd)<br>
         mask color<br>
         mask mark<br>
+        mask range<br>
         mask system<br>
         mask transparency<br>
         ds9.set(string cmd)<br>
         mask color red<br>
-        mask mark 0<br>
+        mask mark zero<br>
+        mask range 10 100<br>
         mask transparency 50<br>
         mask system wcs<br>
         mask clear<br>
@@ -2106,6 +2120,7 @@
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># existing plot</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>plot</tt><tt> </tt><tt>[[&lt;plotname&gt;]
+
         load &lt;filename&gt; xy|xyex|xyey|xyexey]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;
         [[&lt;plotname&gt;] save &lt;filename&gt;]</tt><tt><br>
@@ -2113,15 +2128,19 @@
         [[&lt;plotname&gt;] clear]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         duplicate [#]]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         stats yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         list yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         loadconfig &lt;filename&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;
         [[&lt;plotname&gt;] saveconfig &lt;filename&gt;]</tt><tt><br>
@@ -2142,9 +2161,11 @@
         [[&lt;plotname&gt;] print color rgb|gray]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         close</tt><tt>]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         mode pointer|zoom]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># configure graph</tt><tt><br>
@@ -2164,6 +2185,7 @@
         [[&lt;plotname&gt;] axis x|y format &lt;string&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         legend yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;
         [[&lt;plotname&gt;] legend position right|left|top|bottom]</tt><tt><br>
@@ -2185,44 +2207,56 @@
         [[&lt;plotname&gt;] title x|y &lt;string&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; [</tt><tt>[&lt;plotname&gt;]
 
+
         barmode normal|stacked|aligned|overlap]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># configure current dataset</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>plot [[&lt;plotname&gt;] show
         yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp; &nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
+
         shape circle|square|diamond|plus|splus|scross|triangle|arrow]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         shape fill yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         shape color &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         smooth step|linear|cubic|quadratic|catrom]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         color &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         width &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         dash yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         error yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         error color &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;
         [[&lt;plotname&gt;] color &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         error width &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         name &lt;string&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># select current dataset</tt><tt><br>
@@ -2923,6 +2957,7 @@
         [&lt;ref&gt;] [retrieve]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [&lt;ref&gt;] [save &lt;filename&gt;]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp; &nbsp;&nbsp; &nbsp; [&lt;ref&gt;]
         [radius &lt;value&gt; degrees|arcmin|arcsec]</tt><tt><br>
@@ -3042,18 +3077,22 @@
             </tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
                   [sigma &lt;value&gt;]<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
                   [sigmaminor &lt;value&gt;]<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 [angle
 
 
+
                       &lt;value&gt;]<br>
                     </tt></tt></tt></tt></tt></tt></tt></tt> <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
+
         [match]<br>
         &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; [lock [yes|no]]</tt><br>
       <tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
@@ -3076,12 +3115,15 @@
         </tt></tt> <tt><tt><tt><tt><tt><tt>smooth radiusminor 4<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt><tt>smooth
 
+
                         sigma 2.0<br>
                       </tt></tt></tt></tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt><tt>smooth
 
+
                         sigmaminor 2.0<br>
                       </tt></tt></tt></tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>smooth
 
+
                               angle 45<br>
                             </tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt>
         smooth open<br>
diff --git a/ds9/doc/ref/xpa.html b/ds9/doc/ref/xpa.html
index 578e5e9..8af6b06 100644
--- a/ds9/doc/ref/xpa.html
+++ b/ds9/doc/ref/xpa.html
@@ -208,6 +208,7 @@
                   compass color red</tt><br>
               </tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt>$xpaset
 
+
                       -p ds9 3d match</tt></tt></tt></tt></tt></tt></tt></tt><br>
       <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>$xpaset -p ds9 3d lock
                             yes</tt><br>
@@ -447,6 +448,7 @@
       </tt> <tt>&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; [&lt;ref&gt;] [close]</tt><br>
       <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt> <tt>[&lt;ref&gt;]
 
+
         [crosshair]</tt><br>
       <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [dec
         &lt;col&gt;]</tt><br>
@@ -467,20 +469,25 @@
         </tt></tt> <tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
             [&lt;ref&gt;] [match &lt;ref&gt; &lt;ref&gt;]<br>
           </tt></tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt> <tt>[&lt;ref&gt;]
 [match
 
 
+
         error &lt;value&gt; degrees|arcmin|arcsec]</tt><br>
       <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt> <tt>[&lt;ref&gt;]
 
+
         [match function 1and2|1not2|2not1]<br>
       </tt> <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt> <tt>[&lt;ref&gt;]
 
+
         [match return 1and2|1only|2only]</tt><br>
       <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt> <tt>[&lt;ref&gt;]
 
+
         [match unique yes|no]</tt><br>
       <tt>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [maxrows
         &lt;number&gt;]</tt><br>
@@ -530,8 +537,10 @@
 [symbol
 
 
+
           shape</tt></tt> <tt><tt>circle point|box point|diamond point|</tt>cross
 
+
         point|x point|arrow point|boxcircle point]<br>
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [symbol
         add| [#] remove]<br>
@@ -541,6 +550,7 @@
         &lt;coordsys&gt;]</tt><tt><br>
       </tt> <tt>&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;</tt> <tt>[&lt;ref&gt;]
 
+
         [update]</tt><br>
       <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [x
         &lt;col&gt;]</tt><br>
@@ -1068,6 +1078,7 @@
       <tt><tt><tt><tt><tt><tt>$xpaset -p ds9 export envi foo.hdr little</tt></tt><br>
             </tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>$xpaset
 
+
                           -p ds9 export envi foo.hdr foo.bsq little</tt></tt><br>
                     </tt></tt></tt></tt> $xpaset -p ds9 export tiff
               foo.tiff jpeg</tt></tt></tt><br>
@@ -1610,7 +1621,8 @@
       <p>Controls mask parameters.</p>
       <tt>Syntax:<br>
         mask [color &lt;color&gt;]<br>
-        &nbsp;&nbsp;&nbsp;&nbsp; [mark 1|0]<br>
+        &nbsp;&nbsp;&nbsp;&nbsp; [mark zero|nonzero|range]<br>
+        &nbsp;&nbsp;&nbsp;&nbsp; [range &lt;low&gt; &lt;high&gt;]<br>
         &nbsp;&nbsp;&nbsp;&nbsp; [transparency &lt;value&gt;]<br>
       </tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; [system &lt;coordsys&gt;]<br>
         </tt>&nbsp;&nbsp;&nbsp;&nbsp; [clear]<br>
@@ -1619,10 +1631,12 @@
         Example:<br>
         $xpaget ds9 mask color<br>
         $xpaget ds9 mask mark<br>
+        $xpaget ds9 mask range<br>
         $xpaget ds9 mask system<br>
         $xpaget ds9 mask transparency<br>
         $xpaset -p ds9 mask color red<br>
-        $xpaset -p ds9 mask mark 0<br>
+        $xpaset -p ds9 mask mark zero<br>
+        $xpaset -p ds9 mask range 10 100<br>
         $xpaset -p ds9 mask transparency 50<br>
         $xpaset -p ds9 mask system wcs<br>
         $xpaset -p ds9 mask clear<br>
@@ -1951,6 +1965,7 @@
         &lt;title&gt; &lt;xaxis label&gt; &lt;yaxis label&gt;</tt><tt> </tt><tt>xy|xyex|xyey|xyexey</tt><tt>]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[new
 
+
         [line|bar|scatter] &lt;title&gt; &lt;xaxis label&gt; &lt;yaxis
         label&gt;</tt><tt> </tt><tt>xy|xyex|xyey|xyexey</tt><tt>]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[new</tt><tt>
@@ -1966,8 +1981,10 @@
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[new</tt><tt>
       </tt><tt>[line|bar|scatter]</tt><tt> </tt><tt>stdin</tt><tt>]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[new
+
         name &lt;plotname&gt; stdin</tt><tt>]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[new
+
         name &lt;plotname&gt;</tt><tt> </tt><tt>line|bar|scatter</tt><tt>
       </tt><tt>stdin</tt><tt>]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt><br>
@@ -1978,6 +1995,7 @@
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># existing plot</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>plot</tt><tt> </tt><tt>[[&lt;plotname&gt;]
+
         load &lt;filename&gt; xy|xyex|xyey|xyexey]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;
         [[&lt;plotname&gt;] save &lt;filename&gt;]</tt><tt><br>
@@ -1985,15 +2003,19 @@
         [[&lt;plotname&gt;] clear]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         duplicate [#]]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         stats yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         list yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         loadconfig &lt;filename&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;
         [[&lt;plotname&gt;] saveconfig &lt;filename&gt;]</tt><tt><br>
@@ -2014,9 +2036,11 @@
         [[&lt;plotname&gt;] print color rgb|gray]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         close</tt><tt>]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         mode pointer|zoom]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># configure graph</tt><tt><br>
@@ -2036,6 +2060,7 @@
         [[&lt;plotname&gt;] axis x|y format &lt;string&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         legend yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;
         [[&lt;plotname&gt;] legend position right|left|top|bottom]</tt><tt><br>
@@ -2057,44 +2082,56 @@
         [[&lt;plotname&gt;] title x|y &lt;string&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp; [</tt><tt>[&lt;plotname&gt;]
 
+
         barmode normal|stacked|aligned|overlap]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># configure current dataset</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>plot [[&lt;plotname&gt;] show
         yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp; &nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
+
         shape circle|square|diamond|plus|splus|scross|triangle|arrow]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         shape fill yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         shape color &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         smooth step|linear|cubic|quadratic|catrom]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         color &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         width &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         dash yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         error yes|no]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         error color &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;
         [[&lt;plotname&gt;] color &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         error width &lt;value&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[[&lt;plotname&gt;]
 
+
         name &lt;string&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt># select current dataset</tt><tt><br>
@@ -2777,6 +2814,7 @@
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [coordinate
         &lt;ra&gt; &lt;dec&gt; &lt;coordsys&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[&lt;ref&gt;]
+
         [crosshair]</tt><tt><br>
       </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp; [&lt;ref&gt;] [export
         sb|tsv &lt;filename&gt;]</tt><tt><br>
@@ -2796,6 +2834,7 @@
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp; [&lt;ref&gt;]
         [system &lt;coordsys&gt;]</tt><tt><br>
       </tt><tt> </tt><tt> </tt><tt>&nbsp;&nbsp;&nbsp;</tt><tt> </tt><tt>[&lt;ref&gt;]
+
         [update]</tt><br>
       &nbsp; <tt><br>
         Example:<br>
@@ -2899,18 +2938,22 @@
             </tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
                   [sigma &lt;value&gt;]<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
+
                   [sigmaminor &lt;value&gt;]<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 [angle
 
 
+
                       &lt;value&gt;]<br>
                     </tt></tt></tt></tt></tt></tt></tt></tt> <tt>&nbsp;&nbsp;&nbsp;
 
+
         &nbsp;&nbsp; [match]<br>
         &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; [lock [yes|no]]</tt><br>
       <tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [open|close]<br>
@@ -2923,6 +2966,7 @@
         </tt></tt> <tt><tt><tt><tt><tt><tt>$xpaget ds9 smooth sigma<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt><tt>$xpaget
 
+
                         ds9 smooth sigmaminor<br>
                       </tt></tt></tt></tt></tt></tt></tt></tt> $xpaget
         ds9 smooth lock<br>
@@ -2934,12 +2978,15 @@
                   radiusminor 4<br>
                 </tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt><tt>$xpaset
 
+
                         -p ds9 smooth sigma 2.0<br>
                       </tt></tt></tt></tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt><tt>$xpaset
 
+
                         -p ds9 smooth sigmaminor 2.0<br>
                       </tt></tt></tt></tt></tt></tt></tt></tt></tt> <tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt><tt>$xpaset
 
+
                               -p ds9 smooth angle 45<br>
                             </tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt>
         $xpaset -p ds9 smooth match<br>
diff --git a/ds9/library/contour.tcl b/ds9/library/contour.tcl
index 44e32b9..e737695 100644
--- a/ds9/library/contour.tcl
+++ b/ds9/library/contour.tcl
@@ -832,7 +832,6 @@ proc ContourLoadNewDialog {fn} {
 
 proc Contour2Polygons {} {
     global current
-    global contour
 
     if {$current(frame) != {}} {
 	$current(frame) contour create polygon
diff --git a/ds9/library/marker.tcl b/ds9/library/marker.tcl
index a618fd3..bba8b41 100644
--- a/ds9/library/marker.tcl
+++ b/ds9/library/marker.tcl
@@ -1235,6 +1235,26 @@ proc MarkerSave {} {
     }
 }
 
+proc Marker2Mask {} {
+    global current
+
+    if {$current(frame) == {}} {
+	return
+    }
+    if {![$current(frame) has fits]} {
+	return
+    }
+
+    set filename [SaveFileDialog maskfbox]
+    if {$filename == {}} {
+	return
+    }
+
+    $current(frame) marker create mask $filename
+
+    MarkerDeleteAll
+}
+
 proc MarkerInfo {} {
     global current
     global marker
diff --git a/ds9/library/mregion.tcl b/ds9/library/mregion.tcl
index 1035d02..82d0cb8 100644
--- a/ds9/library/mregion.tcl
+++ b/ds9/library/mregion.tcl
@@ -62,6 +62,8 @@ proc RegionMainMenu {} {
 	-command MarkerLoad
     $ds9(mb).region add command -label "[msgcat::mc {Save Regions}]..." \
 	-command MarkerSave
+    $ds9(mb).region add command -label [msgcat::mc {Convert to Mask}] \
+	-command Marker2Mask
     $ds9(mb).region add separator
     $ds9(mb).region add cascade -label [msgcat::mc {Region Parameters}] \
 	-menu $ds9(mb).region.params
diff --git a/ds9/library/stdfbox.tcl b/ds9/library/stdfbox.tcl
index a7998d8..ba40183 100644
--- a/ds9/library/stdfbox.tcl
+++ b/ds9/library/stdfbox.tcl
@@ -50,6 +50,19 @@ proc InitDialogBox {} {
 				 [list {FITS} {*.fits.z}] \
 				]
 
+    global maskfbox
+    set maskfbox(file) {mask.fits}
+    set maskfbox(dir) {}
+    set maskfbox(types) [list \
+				 [list {FITS} {*.fits}] \
+				 [list {FITS} {*.fit}] \
+				 [list {FITS} {*.fts}] \
+				 [list {FITS} {*.fits.gz}] \
+				 [list {FITS} {*.fits.bz2}] \
+				 [list {FITS} {*.fits.Z}] \
+				 [list {FITS} {*.fits.z}] \
+				]
+
     global epsfbox
     set epsfbox(file) {ds9.eps}
     set epsfbox(dir) {}
diff --git a/ds9/parsers/maskparser.tac b/ds9/parsers/maskparser.tac
index 8831f46..df578d4 100644
--- a/ds9/parsers/maskparser.tac
+++ b/ds9/parsers/maskparser.tac
@@ -35,10 +35,12 @@ mask : {global parse; set parse(result) mask}
  | CLOSE_ {MaskDestroyDialog}
  | CLEAR_ {MaskClear}
  | COLOR_ STRING_ {ProcessCmdSet mask color $2 MaskColor}
- | MARK_ INT_ {ProcessCmdSet mask mark $2 MaskMark}
  | MARK_ mark {ProcessCmdSet mask mark $2 MaskMark}
+ | RANGE_ numeric numeric {ProcessCmdSet2 mask low $2 high $3 MaskRange}
  | SYSTEM_ system
  | TRANSPARENCY_ numeric {ProcessCmdSet mask transparency $2 MaskTransparency}
+# backward compatibility
+ | MARK_ INT_ {ProcessCmdSet mask mark $2 MaskMark}
  ;
 
 mark : ZERO_ {set _ zero}