Try to be friendlier to small screen sizes. Use 800x600 if width/height of 2/3rds is smaller than 800x600 (things don't look smaller than that size), use desktop size if it is for some reason smaller than 800x600

[patterns]
**.h = native
**.c = native
**.cpp = native
**.lua = native
**.txt = native
**.pas = native
**.inc = native
**.hs = native