None......... Paste prototype and delete the data.
Opt.......... Paste prototype and retain the data.
Cmd.......... 
Cntrl........ Delete prototype data.
Shift........ Calculate prototype for current selection or if none whole file.
Shift Opt.... Calculate prototype and append to any existing data.
Shift Cmd.... Calculate prototypes including C++ member functions.
Opt Cmd...... Calculate prototypes excluding static functions.
Opt Cntrl.... Calculate prototypes only for static functions.
Opt Shift Cmd