Prototype/AutoplaceControl
Template:Prototype parent A setting in the map creation GUI. Used by the autoplace system. Only 255 instances of this prototype may be defined.
Mandatory properties
Inherits all properties from PrototypeBase.
Template:Prototype property Either "resource", "terrain" or "enemy". Controls in what tab the autoplace is shown in the map generator GUI.
Optional properties
Template:Prototype property Sets whether this control's richness can be set by the player or not,however it can only be adjusted in gui when category is "resource".
for example,tree do have richness but its category is "terrain",as result you will not able to change it because gui wasn`t display it.
If your autoplace control is used to generate ores, you probably want this to be true.