Clear Opening (Q33399)
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Revision as of 16:07, 24 October 2026 by ChrisVG (talk | contribs) (Created claim: Property:P11: Item:Q714)
measured size of the free opening of the proscenium
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Clear Opening | measured size of the free opening of the proscenium |