The @INC variable of the perl interpreter contains the standard system includes as well as $KDEHOME/share/apps/xpertmud/perl and $KDEDIR/share/apps/xpertmud/perl. $KDEDIR is the standard kde directory (usually /usr/ or /opt/kde2) and $KDEHOME your personal kde directory (usally ~/.kde or ~/.kde2). If you've got two scripts with the same name in both directories, the one in your home directory will be found first. Of course you can change @INC using the # directive or in your own scripts. The standard scripts are a good place for learning the perl bindings, so copy them to your home dir and change them to match your own requirements.