Specifies the extension to be added to the filename associated with the ASSIGN TO PRINTER clause.
>>-.---.--PRINT-EXT--"extension"----------->< +-/-+
| extension | The extension to be added. |
| Default: | No extension is added |
| Phase: | Syntax check |
| $SET: | Any |
This directive is ignored unless ASSIGN-PRINTER() is specified with no filename.