Function: prolog-mode

Major mode for editing Prolog code.

Blank lines and `%%...' separate paragraphs. `%'s starts a comment
line and comments can also be enclosed in /* ... */.

If an optional argument SYSTEM is non-nil, set up mode for the given system.

To find out what version of Prolog mode you are running, enter
`M-x prolog-mode-version'.

Commands:

Uses keymap `prolog-mode-map', which is not currently defined.

Entry to this mode calls the value of `prolog-mode-hook' if that value is non-nil. (fn)