** Create a permanent monster spawn:
<map name>,<x>,<y>,<xs>,<ys>%TAB%monster%TAB%<monster name>%TAB%<mob id>,<amount>,<delay1>,<delay2>,<event>{,<mob size>,<mob ai>}
...
There are two optional fields for monster size and AI. Size can be 0
(medium), 1 (small), or 2 (big). AI can be 0 (default), 1
(attack/friendly), 2 (sphere), 3 (flora), or 4 (zanzou).
Also
*monster "<map name>",<x>,<y>,"<name to show>",<mob id>,<amount>{,"<event label>"{,<size>{,<ai>}}};
*areamonster "<map name>",<x1>,<y1>,<x2>,<y2>,"<name to show>",<mob id>,<amount>{,"<event label>"{,<size>{,<ai>}}};
...
<size> can be:
0 = medium (default)
1 = small
2 = big
From doc/script_commands.txt