Confusion with fade commands

[EneMeneGratschik]

Hi guys,

I'm confused with some of the fade commands.

I know that I can create fades to start and end with D and G, and I can set their default shape in the preferences.
I know that I can select multiple clips and hit command+F to open the fades dialogue and apply mulitple fades at once.
But I haven't really figured out what F does. When I select a clip and hit F, nothing happens. When I drag a selection over a clip and hit F, it creates a fade. But where I can set the default shape? It is neither the default fade in/fade out shape nor the shape set in the fades dialogue.

Hope you can help me out.

[Rich Breen]

"F" is crossfade over an edit between two clips. Default shape is the crossfade shape set in preferences.