Yes, I can appreciate that the majority of the data
is graphical in nature, as you describe. However,
I return to Tim's original issue -- he is trying to
extract a block of data  from a number of files. I
made the assumption that there is some common "label"
that identifies beginning of the desired block, and
further that it was a text-based "label" -- I assume
that it is possible to enter a "note" to appear on an
AutoCAD drawing that is in recognizable text.

But, hey, I'm just trying to be helpful. I'll wait
to hear from Tim.