The rules that use the category "<follow_route_command-system_utterance-gapsout_null-gapsin_pp_gap>" are:

<basic_unit_command-system_utterance-gapsout_null-gapsin_pp_gap>

<follow_route_command-system_utterance-gapsout_null-gapsin_pp_gap>

<basic_unit_command-group_subj_ok-system_utterance-gapsout_null-gapsin_pp_gap>

<follow_route_command-system_utterance-gapsout_null-gapsin_pp_gap>

<follow_route_command-system_utterance-gapsout_null-gapsin_pp_gap>

<follow_route_command-system_utterance-gapsout_null-gapsin_pp_gap> <move_mod-gapsout_null-gapsin_null-not_compass_direction>