You are looking for functionalities? Go ahead!
In its present form, i find this functionality difficult and time-consuming to use.
Yes, it works now but i think it could be improved.
p.s. of course this is not a high priority.
the actual effect of using Z-buffer to see the internal is a side effect of OpenGL. In the next version, the clipping is implemented correctly by planes. Then you can clip dynamically and statically along an axis, which is retained even when it is rotated.