Dopesheet UI question

[Jeffrey Dates <jeff(at)janimation.com>]

This is a quickie

Is there a key command to collapse all selected in the Dopesheet?
There is a way to "expand" all, but I don't see an intuitive way to "collapse" all after I've expanded it. 
( with, align tracks to view on )

Just boggling why there isn't a "collapse all" command in the pull down under "expand all"

Thanks,

JEFFREY DATES
CREATIVE DIRECTOR