Margin rules

Margin rules, or change bars, are annotations drawn alongside content, often to indicate where material has been added or revised.

A margin rule is created by either:

A deletion marker is a special type of marker to indicate where content has been deleted. This type of marker does not have a start and end because it is used to mark a single point. Deletion markers are created using the <marginrule/> command.

The appearance of margin rules and deletion markers is controlled by the <marginrule-properties/> command.

To use margin rules the layout must define where they will be positioned.