This is one command, but can be used in two ways. If only the first argument is given,
the unit whose GID is given will start walking towards the map with the given mapid
(we believe these are the mapindexes found in db/map_index.txt).

When 2 arguments are passed, the given unit will walk to the given x,y coordinates on
the map where the unit currently is.

Example(s):

//Will move/walk the poring we made to the coordinates 150,150
unitwalk .GID,150,150;

//Will move the poring towards alberta (if my assumed mapindexes are correct).
unitwalk .GID,3;