SET&QUERY - explore_xp.c

Usual defined LFUN's:
set_name(s),query_name().

set_fail_message(s): This sets the fail message, when he/she already has
                     visited the area, this message will be displayed.
                     Example: set_fail_message("You have been here already!\n")
set_ok_message(s): This message will be displayed when you get XP. It needs
                   a \n.
                   Example: set_ok_message("Wow! A new area!\n");

