AutoCAD Plant 3D

[#1]

I know this question has been asked before on previous versions, and was promised to be aded in future.Has anyone figured out an easy way to place reference dimensions on isos, for example have it show reference dimensions from a column line to the center line of pipe?

[#2]

I would like this function also. We use this alot..

[#3]

grid line referencing would be nice