I was wondering if it's possible to open other (external files) using a stamp of some sort? A dynamic stamp perhaps? Well, at this moment I haven't found anything. Let me know if you know. Thanks, folks.
A stamp probably is not the object you want to use. Dynamic stamp's actions are run or executed at the time the dynamic stamp is selected. Opening another file will cause the stamp to lose focus when the other file is opened. then one would need to come back to stamped PDF and move and resize the stamp as needed.