AIPS HELP file for USERID in 31DEC09
USERID
Type: Adverb (REAL)
Use: Specifies the user ID number which is entered
when beginning AIPS (logon) for the first time or RESTART
is used. This is the ID of the owner of the image.
Null value: 0
Null value means take logon number.
Magic value: 32000
Magic value means take all logon numbers.