Information about monster spam

hello i know some know it but if you dont know how do read it ^^
for boost a spam of monster go gm lv 3 after go to the place of you want monster spam
press Alt Gr once after press insert ( that creat a frag where mobs will spam)
if you want delete some frag easy put your mouse on the frag and press delete
good.

iv always inserted/deleated my flags by either hitting control+insert or control+delete but only after hitting F9 first.