Six attributes added to the Cast-in Material Specification, CIM_ EXTENTS_X1 (X2, X3, Y1, Y2 & Y3) (View 1, size x etc)

The video below shows how this works and how this is added to the block.

NOTE: The change should be done in ...\Standard\1100\1100\templates_drawings to apply this on the common level so all new projects get this block automatically. 1100 must be replaced with your company number.