Doing the unmasked

is there a way to make a mask which does it’s normal thing where the mask sites but doesn’t completely hide the content where the mask object isn’t?

e.x.

mask_mc coords x:100, y:100, w:100, h:100
stage coords w:300 h:300

so between x100 and x200 the content will be completely visible but between 0-99 and 201-300 the item will have a mask with 30% alpha over it?

clear as mud?