The category "<center_operation-gapsout_null-gapsin_null>" can be expressed as follows:

<center_operation-gapsout_null-gapsin_null>

center <compass_direction-gapsout_null-gapsin_null> of <zoomable_thing-gapsout_null-gapsin_null>

center <zoomable_thing-gapsout_null-gapsin_null>

center in on <zoomable_thing-gapsout_null-gapsin_null>

center on <zoomable_thing-gapsout_null-gapsin_null>