Switches selection to component mode and lets you specify which guide or curve CV's you want selected. You can then shape the guide or curves by manipulating the selected CVs.
Select 1 through 5 to specify which CV's you want selected.
1 represents the CV at tip of the guide for default guides. The number of CVs that you can select changes depending on how many CVs the selected guide has.
Use this option to select all of the guide CVs.
Use this option to return to object selection mode.
After you specify which CVs you want to select, use this option to switch to component selection mode with the specified CVs selected.