[esp-r] Two Windows

[helia.taheri at ut.ac.ir]

Hi

I want to draw the geometry in ESP-r.
I have 3 zones, (as the file attached shown) (Main Zone, Small zone1,
small zone 2 (that is the inner zone).
I want to have a transparent surface in the intersection of the main zone
and small zone 1. I want to know that is it possible that I put two
windows with overlap each other?
I hope to say my question true .

Thanks
Helia Taheri
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