RTfM's
Seriously, the general problem is that many, many such programs were written for
older keyboards by and for people who thought that a
quadruple bucky was normal for "real men".
So, you can learn the intricacies of
termcap & the like, find a terminal / 104-key keyboard friendly version of these editors, or perhaps swich to something else.
Pesonally I try to know just enough
vi for emergencies; but use
mcedit,
kedit,
kwrite, or
kate otherwise.