Hi, Another question from a beginner: If I define a message type of my own, for example a class named "ClassX", somewhere in the cc code of a star that outputs messages of this type the following statement appears: addPort(output.setPort("output",this,CLASSX)); How and where has the symbol CLASSX to be defined? More generally, what is the standard star linking procedure when externally defined user's types are needed? Thanks in advance for your help. -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Guy DURRIEU ONERA/TIS/DTIM tel (33) 05.62.25.26.59 CERT, 2, avenue Edouard Belin B.P. 4025 fax (33) 05.62.25.25.93 31055 TOULOUSE CEDEX 4 FRANCE e-mail [EMAIL PROTECTED] =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= ---------------------------------------------------------------------------- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]