What are the ramifications of spaces which are less than a 5' square? A lot of the time irregular walls leave 3/4, 1/2 or 1/4 of a 5' square. Does a character need to squeeze to stand in these squares; are there any rules for this?
It might make sense if you want to walk back to wall, in which case use the squeezing rules as above. To just stand in them it shouldn't hurt(unless you have the really small one like 1/4 of a square).