The category "<display_control_operation-gapsout_null-gapsin_np_gap>" can be expressed as follows:

<display_control_operation-gapsout_null-gapsin_np_gap>

<center_operation-gapsout_null-gapsin_np_gap>

<display_verb>

<pan_operation-gapsout_null-gapsin_np_gap>

<scale_operation-gapsout_null-gapsin_np_gap>