Creating Object Tracking Lines in blocks!

[bpayne]

Ok, so what I want to be able to do, is to set up guidelines that can be snapped to, but only visible when moving/rotating the block. Revit has something similar.

Examples:

A toilet block with a "guideline" 18" to either side of the centerline of the toilet.
Or
A door block with a "guideline" 12"/18" off of the strike jamb.

Currently I am seeing whether a dot linetype on layer "noplot", with a dark grey color, matching that of the tracking line, will do for now.

[mjfarrell]

I'm baffled?
What do these guidelines help one do that well thought
insertion points, and the normal otrack lines do?
In your example a WC, it should be or is often centered
in the space that it will be placed, so how does having additional
lines help in centering an object within its space?