Terrain editor area size (40 max?)

How can you increase the size of the terrain editor past 40? I saw this in a thread, but it's been about an hour of searching and no dice. Hate to ask knowing the answer is here but I cannot for the life of me find it.

 

It's in the dev screens. I'll try and find it.

 

tools/settings.xml, open it with Notepad++

Find this, "<Setting name="maxBrushSize">40 40</Setting>"

Change the 40 40 to whatever you like, 120 120 seems good, any bigger and it gets laggy..

 

Thanks! 120 oughtta save some time