Function handles, feval's docstring

[Jordi Gutiérrez Hermoso]

feval seems to have an outdated docstring that says Octave doesn't
have function pointers, probably from the days when Octave didn't have
function handles. Would it make sense to change this to say that feval
is most useful when you have function names as strings instead of
handles?

Furthermore, is there a function like "isfunction" or something to
test if a variable is a function handle? If not, can I make one? What
should it be called?

Thanks,
- Jordi G. H.