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Channel filter:
A format is visible for an asset if the asset is published to at least one of the specified channel folders. A format is also visible for an asset if the asset is published to a at least one sub channel folder of one of the specified channel folders.
If no channel folders are specified, no visibility filtering is applied based on channel folders.
Asset type filter:
A format is only visible for an asset if the asset has one of the specified asset types.
If no asset types are specified, no visibility filtering is applied based on asset types.
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