By default, the RATFOR translator writes comments about what command it is translating. The ‘-rk’ option suppresses those comments. Arguments to this option allows one to suppress comments about only particular commands, according to the following list:
b — break c — case t — default d — do f — for i — if n — next p — repeat, until r — return s — switch h — where w — while
For example, one can say ‘-rkrb’ to suppress comments about the return and break statements.