1. A system, configured to execute a method for compositing a set of image layers in a document, comprising a processor configured to: define a group containing a plurality of image layers from the set of image layers as a clipping group; remove at least one mask from at least one of the plurality of image layers in the group to generate a modified group of image layers containing one or more modified image layers; determine a first intermediate image from at least an initial state of the document below the modified group; composite the first intermediate image with at least some of the plurality of image layers in the modified group to generate a second intermediate image; and cross-fade the initial state of the document below the modified group with the second intermediate image according to the at least one mask to generate a third image.