PLOGHELP VERSION                            Jonathan Laventhol, Jul 1983
                                      Revised: Kathryn Seifert, Oct 1986
                                        Revised: Adrian Howard, Aug 1991

Predicate which displays and adds "version" information on the current
Prolog system.

    ?- version.
    ?- version(X).

Keywords: system, version number


The predicate version/0 displays the same message you got when you
entered Prolog. For example:

    ?- version.
    Prolog (Version 3.0)
    yes

The predicate version/1 is used to add more lines to the information
displayed by version/0. For example:

    ?- version('My own Prolog version').
    yes

    ?- version.
    Prolog (Version 3.0)
    My own Prolog version
    yes

This can be useful when creating Prolog saved images (see PLOGHELP
*SAVE). Giving version/1 an empty list is exactly the same as calling
version/0.


-- RELATED DOCUMENTATION ----------------------------------------------

PLOGHELP * SYSTEM
 Predicates which affect the way the Prolog system operates


--- C.all/plog/help/version
--- Copyright University of Sussex 1983. All rights reserved. ----------
