org-special-ctrl-a

org-special-ctrl-a is a variable defined in `org.el'.
Its value is

nil

• This variable is an alias for `org-special-ctrl-a/e'.

Documentation:
Non-nil means `C-a' and `C-e' behave specially in headlines and items.

When t, `C-a' will bring back the cursor to the beginning of the
headline text, i.e. after the stars and after a possible TODO
keyword. In an item, this will be the position after bullet and
check-box, if any. When the cursor is already at that position,
another `C-a' will bring it to the beginning of the line.

`C-e' will jump to the end of the headline, ignoring the presence
of tags in the headline. A second `C-e' will then jump to the
true end of the line, after any tags. This also means that, when
this variable is non-nil, `C-e' also will never jump beyond the
end of the heading of a folded section, i.e. not after the
ellipses.

When set to the symbol `reversed', the first `C-a' or `C-e' works
normally, going to the true line boundary first. Only a directly
following, identical keypress will bring the cursor to the
special positions.

This may also be a cons cell where the behavior for `C-a' and
`C-e' is set separately.

You can customize this variable.