Format of the Input file

TITLE jobname
   key-controlled data
   key-controlled data
   (et cetera...)
End Input

The ordering of keys in input is free and has no consequences.

All numerical information is 'free format': the absolute positions of numbers and the format of reals is irrelevant.

In most cases lowercase characters and capitals can both be used and the program will not discriminate between them, except in filenames.