The rules that use the vocabulary item "in" are:

<nlb-careful>

no friendlies in area

<nlb-not_command_or_system_utterance_or_user_response>

no friendlies in area

<enemy_mod>

dug in

in open

in the open

<in_or_out-not_transitive>

in

<nlb_prefix-nlb8>

friendlies in

friendlies located in

<zoom_operation-gapsout_null-gapsin_null>

zoom closer in

zoom closer in on <zoomable_thing-gapsout_null-gapsin_null>

zoom in

zoom in closer

zoom in closer on <zoomable_thing-gapsout_null-gapsin_null>

zoom in on <zoomable_thing-gapsout_null-gapsin_null>

<center_operation-gapsout_null-gapsin_null>

center in on <zoomable_thing-gapsout_null-gapsin_null>

<air_formation_nom>

pairs in trail

<center_operation-gapsout_null-gapsin_np_gap>

center in on

<comp-not_pro-base>

in order to let

<temporal_control_method>

<sp> in <time_interval>

in <time_interval>

<comp-not_pro-inf>

in order for

<aircraft_activity>

flying in formation

<nlb-nlb8>

no friendlies in area

<nlb-not_careful-nlb8>

no friendlies in area

<comp-pro-inf>

in order

<situation_descriptor-not_rel>

dug in

in open