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-rw-r--r--tools/h5repack/h5repack_main.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/h5repack/h5repack_main.c b/tools/h5repack/h5repack_main.c
index a2f4b14..dcdce82 100644
--- a/tools/h5repack/h5repack_main.c
+++ b/tools/h5repack/h5repack_main.c
@@ -347,7 +347,8 @@ static void usage(const char *prog)
printf(" U - is a filename.\n");
printf(" T - is an integer\n");
printf(" A - is an integer greater than zero\n");
- printf(" B - is the user block size (any power of 2 equal to 512 or greater)\n");
+ printf(" B - is the user block size, any value that is 512 or greater and is\n");
+ printf(" a power of 2 (1024 default)\n");
printf(" F - is the shared object header message type, any of <dspace|dtype|fill|\n");
printf(" pline|attr>. If F is not specified, S applies to all messages\n");