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

<zoom_operation>

zoom closer in

zoom closer in on <zoomable_thing>

zoom in

zoom in <zoomable_thing>

zoom in closer

zoom in closer on <zoomable_thing>

zoom in on <zoomable_thing>

<temporal_control_method>

<sp> in <time_interval>

in <time_interval>

<center_operation>

center in on <zoomable_thing>