https://www.mindfusion.eu/DiagramLiteTrial.zip

This version fixes several bugs that were reported in the past week, and adds the following new features:

~ copy constructors for classes derived from DiagramItem
~ the Pen class encapsulates the color and width of the items border lines
  ~ NodeModified and LinkModified events raised when the user modifies items
  ~ SelectionMoved event raised when the user moves multiple items

Enjoy!