Trax Editor List menu

Autoload Selected Characters: When on, any objects or characters you select in either the scene view or the Time Slider’s Current Character drop-down list are automatically loaded into Trax. Also, when you cancel your selection in the scene view, all characters and objects are automatically removed from Trax.
Load Selected Characters: Only available when Autoload Selected Characters is off.

Loads all selected characters or objects into Trax, replacing the currently loaded characters or objects. If you select Load Selected Characters, cancelling your selection in the scene view does not remove the characters and objects from Trax.
Add Selected Characters: Only available when Autoload Selected Characters is off.

Loads the selected characters or objects into Trax. Use this menu item to add characters or objects to Trax when there is already a number of characters or objects loaded in Trax.
Bookmarks: For characters only. Select from the following:

Bookmark Current Characters: Creates a bookmark for the current, highlighted character in Trax. Character bookmarks let you quickly load characters into Trax.

Use the Bookmark Current Character option box to name your bookmarks.

All the character or object bookmarks you create appear as a list under List > Bookmarks.
Remove All Bookmarks: Deletes all the current scene’s character bookmarks.