home  |  contact us  |  your privacy site:Menu  + about us                  + products             + evaluations             + pricing                     + purchases               + support                   + your requests         + faqs                        - registered users    + uml resources       How to Contact Zicom Systems mentor@zicom.com.au This address is for general enquires about Zicom Mentor and for any feedback or comments you may wish to make. sales@zicom.com.au This address is for sales or sales related enquires including bulk purchases of Zicom Mentor or books on the UML including the Visual Dictionary or the Visual Guidelines. Enquires about other products are welcomed. support@zicom.com.au This address is for support enquires including any issues that you may have or service enquires or complaints. information@zicom.com.au This address is for general enquires about Zicom Mentor and for any feedback or comments you may wish to make. Postal Address: GPO Box 3394 Sydney NSW 2001 Australia Fax Number: +61 2 8221 9516   Today's UML Element Port A port is both a connectable element and a structural feature of an encapsulated classifier. A port specifies the way a classifier interacts with its external environment or the way the internal environment of the classifier provides services to its external environment. A port may be connected directly to other elements in its external environment but typically uses interfaces to declare either the services that it provides or the services that it requires.   Today's Thought Leader George Boole (1815-1864) Boole was an English mathematician who is considered to be one of the founders of symbolic logic. Although he had little formal education he made significant contribution to formal logic, differential equations and probability theory. Any variable that returns one of two results: (true or false) carries his name and is termed a boolean variable. Copyright © 2003-2004 Zicom Systems Pty. Limited. All Rights Reserved. Unified Modeling Language and UML are either registered trademarks or trademarks of Object Management Group, Inc. in the United States and/or other countries.