Map editing tip

[Harlan]

Here's something I never noticed, I imagine it will be new to some people. When editing a map in the map editor, if you have river selected over a square with river already on it and press shift + right click (instead of left click), the river will disappear. I've always had to resort to turning the square into ocean then back to land to get rid of a river.

[Mark von Wagner]

This technique has been around since at least the Colonization map editor.