Notes and Comments

Notes are comments in the diagrams. Notes can stand on their own, or they can be linked with a dashed line to the elements they are commenting (Figure 3.6). They can appear in any kind of diagram.

The dashed line can sometimes be awkward because you can't position exactly where this line ends. So a common convention is to put a very small open circle at the end of the line. Sometimes, it's useful to have an in-line comment on a diagram element. You can do this by prefixing the text with two dashes: --.