AudioSuite Processing : AudioSuite Window Header : Selection Reference
 
Selection Reference
This menu aims the selected process at either clips selected in an audio track or at clips selected in the Clips List.
When you select a clip on-screen (in either a track or the Clips List) Pro Tools | First selects both occurrences of the clip. Since you may not want to process both, this menu provides a convenient means of limiting the AudioSuite process to clips selected in one or the other.
Selection Reference pop-up menu (Invert plug-in shown)
• Playlist
Applies AudioSuite processing to clips on tracks. Processed clips also appear in the Clips List.
• Clips List
Applies AudioSuite processing only to selected clips in the Clips List. Processing is not be applied to clips on tracks.
*If the Use In Playlist option is enabled in addition to Clips List being selected in the Selection Reference pop-up menu, the processing will be applied to the selected clip in both the track and the Clips List.