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.