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### 9.8 Notes and Comments

The ‘`note`’, ‘`comment`’ and ‘`endnote`’ commands enable you to make annotations to the chart that are visible to the reader. Notes are placed onto the chart drawing area in a callout; comments are placed onto a column left or right from the chart; whereas endnotes are placed at the bottom of the chart. Notes are suitable for shorter comments, whereas the latter two fit longer explanations better.

Each note, commend and endnote has a target element. The target element is the element preceeding the ‘`note`’, ‘`comment`’ or ‘`endnote`’ command50. In case of notes the tip of the callout will point to the target element, whereas side notes will be typeset beside their target. You can issue multiple notes, comments and/or endnotes to the same target. If numbering is enabled for a note, comment or endnote, it inherits the numbering of its target (if any).

The syntax is simple, issue one of the three commands with attributes. You must specify a label, but similar to arrows or entities, the colon syntax can be used.

    note: This is a note [attributes];
    note at <tip>: Note pointing to <tip> [attribute];
    comment: Comment text [attributes];
    endnote: Endnote text [attribuest];

Note and comment text is typeset in a smaller font by default. You can change both of the above by changing the ‘`note`’, ‘`comment`’ or ‘`comment`’ styles.

#### Footnotes

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Note that some elements cannot be targets, such as chart options. In this case the preceeding element becomes the target.