Yes boney , You can patch render in B3 ,just open the file . select the cube on the right to toggle view modes to get the wireframe view and make your tweak on the object(s) now click the cube again to bring up the bitmap again. now lasso the area you want to patch(the tweaked area) and hit the little ball to render just that area. just be carefull about lighting tweaks or the patch will be very noticable. note: this CAN be un done, if needed. but I would make a copy of both the br3 and it's bitmap first just to be safe. or you could just "revert to saved" Hawkfyr

“The fact that no one understands you…Doesn’t make you an artist.”