Operands

fn
Specifies the one- to eight-character name of the file to be processed. The default is MAS.
ft
Specifies the one- to eight-character type of the file to be processed. The default is COMMANDS. To specify a file type, the file name operand must also be specified.
fm
Specifies the one- to two-character mode of the file to be processed. The default is A1. To specify a file mode, the file type operand must also be specified.
logsize
Specifies the amount of storage used for the log data space storage. The format is nM where n is between 1 and 2048. The default is 4M.