When importing a graphic file I can either choose "Composition" or "Composition - Retain layer size".
Couldn't quite figure out what the difference is.
Can somebody give an example?
Sure, make a Photoshop document with two layers in it. Like, say, a text layer and a circle.
Import it both ways and note the layer size differences in the two comps. In one, every layer is the size of the composition, but in the other one, the layer sizes match the layer's contents.
Retrieving data ...