<div style="direction: ltr;"><span class="q"> Hello ESP-r users,<br>I have a question about the materials.<br>
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<div style="direction: ltr;">Is it possible to separate a big volume in different parts by inserting an "imaginary" surface ?<br>My objective is to analyze a big room in different parts, but I think, I need an "imaginary" surface to do that.<br>
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<span class="q" id="q_1194dfbe8003cf55_2"> Do you have any suggestion ?, thanks<br><br>
Regards,<br><br>
Francesco<br>
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