Google
 

Trailing-Edge - PDP-10 Archives - BB-4160F-BM - sort-source/20.cmd
There are 2 other files named 20.cmd in the archive. Click here to see a list.
SRTPRM+SRTSTA+SRTCMD+SRTJSS+SRTCER+SRTCMP+SRTFLT+SORT