The rules that use the category "<direction>" are:

<enemy_loc-gapsout_null-gapsin_null-mobile>

<enemy_phrase-mobile> <direction>

<enemy_loc-gapsout_np_gap-gapsin_np_gap>

<enemy_phrase> <direction>

<action_command>

<action_word> <direction>

<enemy_loc-gapsout_null-gapsin_null>

<enemy_phrase> <direction>