OpenRA/OpenRA — pull request #2896 by Mailaender (2013-03-29 22:48:26+00:00)
Title: Added switchable ruler markings to editor

Useful when trying to create symmetrical maps.

Again doing with https://github.com/TM-PD/FirstDance/ what they did with us. This is mostly the work of @SNce. I just made it switchable with a toolbar-button and tweaked some values so it does not look crappy when I zoom out a lot on Windows.