AutoCAD 2010/2011/2012 DWG Format

[#1]

TREEDEPTH??  I usually just dig the hole as deep as the length of the roots on the tree...  Oh, "TREEDEPTH System Variable", sorry, I thought we'd switched to landscaping...  Mine is <3020>, which the Help file says is default.  This is a variable I'm not familiar with.  What does this do?  The explanation in the Help file isn't very clear.

[#2]

oops, sorry about the double-post, I'd reached the "end of page 1", and I thought the reply didn't post.