A lot of maps have everything drawn on layer #1 and nothing else it seems. I have heard you can adjust elevation and filter out certain heights, is this true and if so , what are the normal defaut heights to block so you can only see 1 instead of 3 in one huge mess looking like it was made by a pre-schooler.


All else fails is there a way for me to edit the 1 layer maps & split them to 3 seperate levels.

Thanks
Wilee