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By default, all data are stored under the “particles” folder of your currently opened project. If you need separated locations for the individual formats or emitters, feel free to change paths with the "Path" option. The BIN format should always be activated, since this is the only format that is entirely supported. If your 3D program already supports the Alembic format, we recommend this option as well.
Particle cache (.bin)
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Arnold Scene Source (.ass)
--->>This is the scene description format of Solid Angel's Arnold render engine. You can export simulation data to native ASS files for direct use inside Arnold.