It would be very beneficial to view all of the internal lines of the sectioned rectangular prism that the perspective grid consists of. This is a standard workflow for drawing 3 dimensional objects. Without this, it is very difficult to draw accurately.
Essentially this but in perspective mode:
This doesn't appear possible to in CS5. Please specify if this is not the case and if it is possible in CS6.
Not rly. What I mean is...
The big rectangular prism consists of a bunch of small cubes. I wish to view the lines consisting of the back and bottom faces of these small cubes to able to meausre the depth of objectss by counting the internal cubes/edges. See the isometric image for an understanding of what I mean. It does not appear this is possible so I program it myself.