The user can create multiple class diagrams using the Class Designer. Every class diagram could be explaining a part of your code base.
There are diagrams in design docs that provide a better explanation for the design. Also diagrams are a big plus in User Guides. But one of the pains is keeping these diagrams up to date with the changing code base.
We provide “Export Diagram” menu option that will allow you to export your diagram to a few formats. You can export the diagram to a desired location. Then you can have your design docs or user guides pick the images from that location. Over time as the code changes the diagrams will stay synchronize. Remember that the diagrams are a view of your code. You can export the diagrams every now and then and have your design docs & user guides always pointing to the recent architecture.
For a peek at the export dialog – click here.