Using Keyboard Shortcuts to Modify Master-Affiliate
The master clip command in the Modify menu changes depending on what type of
clip you have selected. For example, if you select a master clip in the Browser, the
Modify menu contains the Duplicate as New Master Clip command.
Because this is actually one command whose behavior adjusts depending on the type
of clip selected, there is only a single button, called Make/Break Master Clip, to access
this command in the Button List and Keyboard Layout window. To determine the
results of clicking the Make/Break Master Clip button, determine which kind of clip is
selected and use the table above.