Related sites

PLCS Training: There are a number of PLCS training events taking place throughout the year, click here to find out more.
AP233(http://www.exff.org/ap233): This web site provides information about the use of ISO 10303-233 (AP233) Systems Engineering and design.
EXFF(http://www.exff.org): This web site provides a set of open source tools for working with EXPRESS and UML.