masking for gorup images so we dont have to pile up one to another, tq.
Thanks for the request.
For basic masking, one technique you can use is embedding an item in a group, and setting the group's overflow for hidden. We discuss that in this article: http://forums.tumult.com/t/masking-elements-by-using-content-overflow-groups/1342
Of course, we'd like to have better built-in support for this.