Index: /branches/eam_branches/ipp-20150616/Ohana/src/opihi/cmd.data/read_vectors.c
===================================================================
--- /branches/eam_branches/ipp-20150616/Ohana/src/opihi/cmd.data/read_vectors.c	(revision 38550)
+++ /branches/eam_branches/ipp-20150616/Ohana/src/opihi/cmd.data/read_vectors.c	(revision 38551)
@@ -77,4 +77,14 @@
   if ((argc < 3) || !(argc % 2)) {
     gprint (GP_ERR, "USAGE: read name N name N ...\n");
+    gprint (GP_ERR, "  options:\n");
+    gprint (GP_ERR, "     -fits EXTNAME : read a fits file from the given extension (vector names are column names)\n");
+    gprint (GP_ERR, "     -v : verbose mode\n");
+    gprint (GP_ERR, "     -csv : comma-separated values (columns may be identified in excel-style: A, AC\n");
+    gprint (GP_ERR, "     -skip N : skip N lines before reading\n");
+    gprint (GP_ERR, "     column names may include a type: name:type\n");
+    gprint (GP_ERR, "       type is int, float, char, time\n");
+    gprint (GP_ERR, "       for char, values are placed into a list $name:0 - $name:n\n");
+    gprint (GP_ERR, "       for time, values are human-readable date/time strings YYYY/MM/DD,hh:mm:ss\n");
+    gprint (GP_ERR, "       the resulting vector is a float based on the TIMEFORMAT, TIMEREF values\n");
     return (FALSE);
   }