the @kbd{C-f} is a complete key in itself. It's impossible to give
@kbd{C-f C-k} an independent meaning as a command. @kbd{C-f C-k} is two
key sequences, not one.@refill
All told, the prefix keys in Emacs are @kbd{C-c}, @kbd{C-h},
@kbd{C-x}, @kbd{C-x @key{RET}}, @kbd{C-x @@}, @kbd{C-x a}, @kbd{C-x n}, @w{@kbd{C-x
the @kbd{C-f} is a complete key in itself. It's impossible to give
@kbd{C-f C-k} an independent meaning as a command. @kbd{C-f C-k} is two
key sequences, not one.@refill
All told, the prefix keys in Emacs are @kbd{C-c}, @kbd{C-h},
@kbd{C-x}, @kbd{C-x @key{RET}}, @kbd{C-x @@}, @kbd{C-x a}, @kbd{C-x n}, @w{@kbd{C-x