Hello, I've tried to do as you adviced me here, but when i press Save as BMP, it wont do anything, only warning message appears. It says You opened it for read only. How could i fix this? Thanks 
You go to Setup, and unselect the "Read only" box on the right half of the opened page, save and it get's applied... or you can unset it temporary at each session start by going to the Settings and unchecking it.
Yeah, you can't do this in a middle of editing a file, unfortunately.
Edited by The Imp, 24 January 2014 - 10:06 AM.
Yep, Jarno Mikkola. my Mega Mod FAQ. Use of the BWS, and how to use it(scroll down that post a bit).
OK, desert dweller, welcome to the sanity, you are free to search for the limit, it's out there, we drew it in the sand. Ouh, actually it was still snow then.. but anyways.