Version tracking system for 2MAPPS V.III production:

	We are requesting some simple standard lines at the top of the
delivery notes for 2MAPPS V3 to facillitate version tracking, and also
a standardized version identification printed by each program. 

	( example appended at bottom )

     - Programs and scripts should print out version identification which
       will on a single line print the program name, the word "Version",
       the date of the version, and optionally, a version number. This
       will allow the current versions of all programs to be grep'd
       (on 'Version') from out.pcp into a separate run version file and
       archived.

     - Program and script deliveries (delivery units) should be accompanied
       by a delivery note file called "program.YYMMDDHH.del" which will
       have the first line in the format:

    program   version   date delivered  north prod date   south prod date
DEL pixphot    000914    000915           *000916           *000917

       and additional lines for each bug the delivery addresses:

    program   version   bug found    one line bug description
DEL pixphot    000914    000914      pixphot crashing western civilization

       and for deliveries which have modifications which are not bug fixes:

    program   version                one line mod description
MOD pixphot    000914                pixphot finds the answer to L,U, & E

       and any additional lines as needed for more detailed descriptions
       of bugs and fixes.

     - sub-programs (such as PROPHOT) should deliver the code in the same
       manner as stand alone programs, but should additionally deliver
       libraries and makefiles for the libraries or just subroutine
       code as appropriate, and the composite will be delivered by
       the cog e for the parent program (such as PIXPHOT).

       These delivery note files will be grep'd on DEL into a file summarizing
       program/script deliveries, and on BUG to summarize bug fix deliveries,
       and MOD to summarize modifications.

       These files will be archived in (rodan:)/2massc/ops/doc/ by Ron
       when he takes the delivery.

       In addition, a bug list will be maintained in the same directory
       in the BUG format above, with bug descriptions as they are identified.

       A truth table will be created from the deliveries file containing the
       latest correct version for programs and scripts for checking
       against pipeline production run output. any deviations from the truth
       table will be red flagged following pipeline scan completion.

* north prod date and south prod date to be provided by Ron when delivered to
  north and south ops.


--------------- EXAMPLE pixphot.001013.del fil3 -----------------------------------------

DEL pixphot    001013    001019  
BUG pixphot    001013    001012  GFIND producing detections within 1"
MOD pixphot    001013    pixphot modified to trim single coverage along edges
MOD pixphot    001013    pixphot modified to output 8 bit coverage images

	This version of PIXPHOT incorporates:

	- A modification to allow minimum coverage of 1 frame internal to
coadded images, but trim off single coverage along the edges of the images.
This modification should fill most internal holes caused by the bad H band
array with many dead pixels before it was replaced. The single coverage
pixels along the edges of the coadded images will still be removed for 
cosmetic reasons.

	- A modification to pixphot to write out 8 bit coverage images to
be used by GALWORKS.

	- A bug fix to GFIND which chooses a random seed pixel in the case
where adjacent numerically identical seed pixels on a single source sometimes
resulted in multiple detections within 1". These close detections became
close "passive deblends" which resulted in confusion at band merging,
split sources, and sometimes fragmented sources with identical names.

	This version requires namelist modifications:
		nl.pixphot_n    - north
		nl.pixphot_s    - south