ADV has meaning only if you use WRITE . . . ADVANCING in your source code. With ADV in effect, the compiler adds 1 byte to the record length to account for the printer control character.
ADV option syntax .-ADV---. >>-+-------+--------------------------------------------------->< '-NOADV-'
Default is: ADV
Abbreviations are: None
Use NOADV if you already adjusted record length to include 1 byte for the printer control character.