forward-char

forward-char is an interactive built-in function in `C source code'.

It is bound to C-f.

(forward-char &optional N)

Move point N characters forward (backward if N is negative).
On reaching end or beginning of buffer, stop and signal error.
Interactively, N is the numeric prefix argument.
If N is omitted or nil, move point 1 character forward.

Depending on the bidirectional context, the movement may be to the
right or to the left on the screen. This is in contrast with
<right>, which see.