If you have subroutines in your program that you do not want to be included in PATH or FASTPATH processing, use the SKIPSTEP command. This causes IDF to skip PATH and FASTPATH processing when you call a subroutine on the list of subroutines being skipped. That is, for the purposes of PATH and FASTPATH processing, the skipped subroutine is treated as one instruction: the subroutine call itself.