Index: trunk/pstamp/test/gpc1_sample.txt
===================================================================
--- trunk/pstamp/test/gpc1_sample.txt	(revision 25370)
+++ trunk/pstamp/test/gpc1_sample.txt	(revision 25426)
@@ -1,24 +1,46 @@
+# Sample Postage stamp request description file
+# This can be parsed by the program pstamp_req_create to build a 
+# PS1_PSTAMP_REQUEST binary table
+
+# First line of data is for the extension header
+# The order of keywords follows TABLE 6 of ICD
+#
+# Note that value for REQ_NAME may be overriden by a command line
+# argument to pstamp_req_create.
+# Blank and comment lines are ignored
+
 # REQ_NAME EXTVER
-CHANGEME 1
+CHANGEME     1
+
+# subsequent lines define the rows in the table
+
 # ROWNUM PROJECT JOB_TYPE OPTION_MASK REQ_TYPE IMG_TYPE    ID      TESS_ID COMPONENT   COORD_MASK CENTER_X   CENTER_Y WIDTH HEIGHT REQFILT MJD_MIN MJD_MAX
-1    gpc1   stamp 1 byid warp     6245   MD08 skycell.077 2 242.400666 55.273513 200 200 null 0 0
-2    gpc1   stamp 1 byid warp     6254   MD08 skycell.077 2 242.400666 55.273513 200 200 null 0 0
-3    gpc1   stamp 1 byid warp     6264   MD08 skycell.077 2 242.400666 55.273513 200 200 null 0 0
-4    gpc1   stamp 1 byid warp     6317   MD08 skycell.077 2 242.400666 55.273513 200 200 null 0 0
-5    gpc1   stamp 1 byid warp     6324   MD08 skycell.077 2 242.400666 55.273513 200 200 null 0 0
-6    gpc1   stamp 1 byid warp     6465   MD08 skycell.077 2 242.400666 55.273513 200 200 null 0 0
-7    gpc1   stamp 1 byid warp     6466   MD08 skycell.077 2 242.400666 55.273513 200 200 null 0 0
+# warps from various epochs for one of the SN candidates. Specifiying the skycell speeds up processing
+1         gpc1   stamp      1        byid        warp     6245   null skycell.077 2 242.400666 55.273513 200 200 null 0 0
+2         gpc1   stamp      1        byid        warp     6254   null skycell.077 2 242.400666 55.273513 200 200 null 0 0
+3         gpc1   stamp      1        byid        warp     6264   null skycell.077 2 242.400666 55.273513 200 200 null 0 0
+4         gpc1   stamp      1        byid        warp     6317   null skycell.077 2 242.400666 55.273513 200 200 null 0 0
+5         gpc1   stamp      1        byid        warp     6324   null skycell.077 2 242.400666 55.273513 200 200 null 0 0
+6         gpc1   stamp      1        byid        warp     6465   null skycell.077 2 242.400666 55.273513 200 200 null 0 0
+7         gpc1   stamp      1        byid        warp     6466   null skycell.077 2 242.400666 55.273513 200 200 null 0 0
 
 
 # get a specific warp
-10   gpc1   stamp 1 byid  warp     6316  null skycell.077 2 242.400666 55.273513 200 200 null 0 0
+10        gpc1   stamp      1        byid         warp     6316  null skycell.077 2 242.400666 55.273513 200 200 null 0 0
+
 # get stamps from all warps for exposure (only destreaked ones will succeed)
-11   gpc1   stamp 1 byexp warp    o4973g0123o null skycell.077 2 242.400666 55.273513 200 200 null 0 0
+11        gpc1   stamp      1        byexp        warp    o4973g0123o null skycell.077 2 242.400666 55.273513 200 200 null 0 0
 
 # get stamps from all chipRuns for exposure (only destreaked ones will succeed)
 # add the mask and weight images as well
-12   gpc1   stamp 7 byexp chip    o4973g0123o null all         2 242.400666 55.273513 200 200 null 0 0
+12        gpc1   stamp      7        byexp      chip    o4973g0123o null null  2 242.400666 55.273513 200 200 null 0 0
 
 # get the corresponding diff
-13   gpc1   stamp 1 byexp diff    o4973g0123o null null        2 242.400666 55.273513 200 200 null 0 0
+13        gpc1   stamp      1        byexp      diff    o4973g0123o null null 2 242.400666 55.273513 200 200 null 0 0
 
+# get the stack that was the templae for that stack
+14        gpc1   stamp      1        byid     stack    14031  null null 2 242.400666 55.273513 200 200 null 0 0
+#
+# get the same stamp by go through the diff
+15        gpc1   stamp      1        bydiff     stack    193939 null null 2 242.400666 55.273513 200 200 null 0 0
+
