I'm having a hard time translating a passage about screen printing.
For screen prints, mesh (originally silk) is stretched tautly across a frame. An image is glued or otherwise affixed onto the mesh to mask out compositional areas... Areas masked out by compositional shapes are nonporous and obstruct the ink through the mesh.
I looked up the dictionary and it says the phrase to mask out means "to conceal or cover part of something from view." So do the verb "mask" and the phrase "mask out" mean the same? I searched every website related to screen printing to figure out the basic concept of screen printing, but I don't still get it. And a friend of mine told me that since the particle out is after mask, mask out means "to cover except the compositional area." Is he correct?
For example, if I want to get a star print on my t-shirt using screen printing, how can I get the star-shaped print by masking out the compositional area(=a star shape)? Maybe in here "the compositional area" does not indicate the image(the star) itself, but the background area except the star shape? I'm getting confused.. Or mask out means "to mask except the star shape"? I want to understand the meaning of mask out and compositional areas (Are they shapes or backgrounds?) more clearly. Thanks...