The modifier stack is a reference to a Modifier Stack ChannelChannel to pass and apply 2D Modifiers on different pipeline element form the ContentRead More.
It get back every 2D ModifierModify a 2D imageRead More placed inside a Modifier Stack LayerDeal with a group of 2D Modifier as you deal with SceneRead More.
Read more about How to use Modifier Stack
Apply multiple modifiers from a Scene to Pipeline element
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The example below explain how a list of modifiers can be applied on a specific content area inside a Processor: