Diagrams and charts are important because they present information visually. The adage “a picture is worth a thousand words” applies when it comes diagrams and charts. This handout provide a few hints on understanding information visually. Don’t skip over diagrams and graphs when reading!
Vendor stencils can be very useful for some types of diagrams, for example wiring diagram of a core Ethernet switch. I prefer to stay away from using pre-made icons in diagrams indicating architecture or relationships. Pre made icons come in their own color scheme and are usually in an isometric perspective to give that 3d feel.
It is a variant of the Activity Diagram where the nodes are the interactions or interaction occurrences. The Interaction Overview Diagram focuses on the overview of the flow of control of the interactions which can also show the flow of activity between diagrams.