What does building a map do?

Sometimes the game will say I need to build lighting or build paths. Also, sometimes the Advanced Editor will glitch out when I try to move stuff -- moving the entire map instead of what I'm trying to move.
This in turn causes the terrain to look glitchy. What am I doing wrong?
It seems to take an EXTREMELY LONG time to build a map (which I'm doing right now), so I'd appreciate knowing if its even necessary to do this.
This in turn causes the terrain to look glitchy. What am I doing wrong?
It seems to take an EXTREMELY LONG time to build a map (which I'm doing right now), so I'd appreciate knowing if its even necessary to do this.
Army SROTC Cadet


Comments
It's really bugging me. Can't find anything on it so far...
"Show Nav Paths" - keyboard "P" ?
Have you been poking around in all the resources on this and the archived forums? There's tons of editor info.
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There's a setting to build lighting at "Preview" level in the toolbar and menus so it won't take so long.
Also, if you're selecting stuff, and miss...you may select something in the background, including the landscape. When deselecting, don't click off an object! That'll just select something else. You need to practice making sure only the objects you want are selected!!
Don't forget CTRL+Z is "UNDO"
This has been a test of the emergency flame-fest system. Please do not adjust your set.