RE: Doc of keyboard macros

[Drew Adams]

> > And I think we should have F3 first, because "C-x (" is deprecated,
> > and we are now reinstating it for the benefit of some systems that are
> > either rare or ones that we aren't supposed to care about too much.
> 
> There is a current tendency towards deprecating F1-F10 function keys
> by hardware manufacturers.  These keys are already hard to press by default
> on PC: a special additional key <Fn> needs to be pressed in combination of
> <Fn>-<F3>, and a Chromebook has no row of function keys at all: in order
> to get <F4>, you have to press <Search>-4.

In addition to what Juri says: It makes sense for Emacs and users
to bind function keys (when available, obviously) to repeatable
commands, so you can just hold down the key to repeat the action.
It's a waste to use `F3' for `kmacro-start-macro-or-insert-counter'.

So +1 for favoring `C-x (' etc. over `F3' etc.