Allow you to flood any map by spawning rising water. You can also toggle it on/off, change the rate of flooding and reset back to normal.
F8: Toggle flood going UP, DOWN or OFF
F9: Increase flood speed
F10: Decrease flood speed
F11: Hide/show info box
Delete: Remove flood
There may be a small bit of lag when there are several hundred objects that wants to float.
Also for some reason maps that has many huge boats cause alot of lag.