AIPS HELP file for INCLASS in 31DEC19
As of Wed Feb 20 16:58:02 2019
Type: Adverb (String*6)
Use: Data files are stored in AIPS under logical names which
have 3 parts: a 12-character "name" field, a 6-character
"class" field, and a numeric "sequence number" field.
INCLASS is used to specify the "class" field for the first
(or only) input data file used by a verb or task. This
adverb is handled by AIPS tasks and verbs under special
"wildcard" rules. These rules determine which test
strings (e.g. image names in the catalog) match the
user-specified string. Except for '*', '?', and trailing
blanks (when an * is present), all characters specified
in INCLASS must exactly match the corresponding characters
in the test string. A '?' in INCLASS matches any single
character in the test string. An '*' in INCLASS matches
0 or more characters in the test string. Thus, INCLASS
= '*' matches any test string. INCLASS = '??B*D' matches
'ASBD', 'XYBXDD', and 'A3B45D', but does not match 'ABCD',
'BCD', or 'XYBXDE'.
Null value: ' '
Taken as '*' unless the Help file for the specific task
or verb states otherwise.