Labels:text | rectangle | screenshot | child art | handwriting | poster OCR: OPENDOC ON THE ORB Compound document Part handler Part {object) IDL stub May be local, CORBA May be distributed Figure 1. OpenDoc makes the compound document (on the left) the star player on the desktop. The require- ments of each component in the document are met by passing requests through a procedure stub call ( expressed in Interface Definition Language, or IDL), across the CORBA bus, and to the part handler, which does the work.