I am looking for a 3D file format that supports instanced components/objects. That is, there is one geometry declaration and then it is instanced in numerous places. Open formats are very much preferred.

closed as too broad by Alexandre Vaillancourt, Josh Petrie Jan 19 '16 at 17:07

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Collada (.dae) files seem to have support, according to 5-51 in the 1.4 specification:

The <instance_geometry> element instantiates an object described by a <geometry> element.

Collada is supported by most platforms.

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