Editing : Editing Clips and Selections : Creating New Clips : Auto-Name Separated Clips Option

Auto-Name Separated Clips Option
With the Auto-Name Separated Clips option in the Editing Preferences page selected, Pro Tools automatically names separated clips for you. The name is a numbered variation of the original clip’s name.
By separating a clip, additional clips are auto-created from data on either side of the separation, which have new numbers assigned to their names. The original clip remains intact and unchanged on the Clip List.
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The Clip List can quickly fill up with auto-created clips. For easier clip management, click the Clip List menu, deselect Show > Auto-Created to hide all auto-created clips in the Clip List.