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### 4.6 Annotating the Chart

Often it is important to make annotations to the chart detailing what is going on. Msc-generator supports several types of annotations, let’s start with notes and comments. Both have a target element to which the note or comment is made. Notes appear as small callouts in the chart and should preferably contain short text. Comments, on the other hand appear on the side and allow for more elaborate explanations.

Another way to explain what happens is by annotating a series of events. This can be done by verticals, which are elements spanning vertically usually besides an entity line. Here we show two of them, the range and brace verticals, but there are more.