Hi John, all, I wanted to check the following: The sinario is as follows: table x.ctb includes x1.cti and x2.cti (in that order) if a symbol is defined in x1 and in x2, which definition takes precedence? or is the behaviour undefined? What I want to be able to do is to override a previously seen definition. Thanks. Mesar For a description of the software, to download it and links to project pages go to http://www.abilitiessoft.com