Question that's been on my mind for a while....

what blue squares

In the combo editor, next to the red passability section, there's a blue one.

Here are some topics that explain this.

http://boards.armageddongames.com/showthread.php?s=&threadid=12711

http://boards.armageddongames.com/showthread.php?s=&threadid=47996&highlight=blue+combo

http://boards.armageddongames.com/showthread.php?s=&threadid=12452

http://boards.armageddongames.com/showthread.php?s=&threadid=12848

Thanks, VEL. One of those were actually recent too.^_^

These are useful as shortcuts, so like in the ever-so standard BS Quests, you don't have to keep hitting the +and- keys everytime you want to put down some grass tiles. Oh, except for the fact that for once all tiles already placed are affected as such.