Selection area in a layout.

[gerry@ictooling.com]

Here is an answer I got from Cadence when the default selection area
has changed:

There is a .cdsenv environment variable that will make the tool do what
the you want.

--------------------
layout useTrueBBox boolean t
--------------------

This is the opposite of what I wanted, but it was the clue I needed. So
I changed this default
to
--------------------------------------------------
layout useTrueBBox boolean nil
---------------------------------------------------

And " presto" I get what I wanted.

The behavior I was looking for is to have the selection area of a
placed cell be reflected by the first
polygon (rectangle?) on the "instance drawing" layer by default and not
the bBox of the cell.

Looks like some point in the last 5 years, cadence has silently changed
the default behavior.
(I think this because extensive searching of here and sourcelink etc.
has not documented this
change!)

Enjoy.

-- Gerry