AIPS HELP file for REVERSN in 31DEC21
As of Wed Oct 27 23:25:51 2021
REVERSN: Checks disk for prersence of extension files
INNAME Image name(name).
INCLASS Image name(class).
INSEQ 0.0 9999.0 Image name(seq. #). 0 => high
INDISK 0.0 9.0 Disk drive #. 0 => any
INEXT Extension file type 'SN','PL'
'CC','SL'... ' ' => all
Use: REVERSN finds the maximum version number of a specified
extension file type or all possible extension file types in a
specified image or uv data set. If any are found that were
not in the header or if the header thought there were more than
actually exist, messages will be generated. In principle, there
are 655 possible extension file types (26*26 - 21 forbidden)
each with up to 46655 versions. To save time, the routine quits
when 200 versions in a row are not found (INEXT not blank) or
when the first 15 versions are not found or 100 versions in a
row are not found (INEXT blank). Therefore, this verb will not
recover, e.g. SN table version 512 when the next highest version
number is 256.
INNAME......Image name(name). Standard defaults.
INCLASS.....Image name(class). Standard defaults.
INSEQ.......Image name(seq. #). 0 => highest.
INDISK......Disk drive # of image. 0 => any.
INEXT.......Extension file type. ' ' => loop over all
legal pairs of characters