Silk screens are created in part by a masking product. All of these masking techniques have the same concept, they only differ in how the mask is applied. A mask in Paint Shop Pro serves the same purpose. Instead of a plastic face mask or a rubbery masking agent, Paint Shop Pro uses a greyscale image as the masking mechanism. You create the greyscale image, and it becomes the mask.
Lets take a look at the basic concepts.
The following is a example of a simple hard-edged mask. The mask above was created by opening a new image, and then floodfilling with a solid fill a selection which I created. You can invert masks. Because Paint Shop Pro can apply this mask to a layer, you can have elements on other layers which will show through the masked areas. Lets take a look at some examples.