What does a change bar indicate in documentation?

A change bar in documentation serves to highlight modifications made to the text, making it easier for readers to identify what has been altered since the last version. When a change bar appears in the margin alongside a section of text, it signifies that there has been an update or revision in that specific area. This visual cue is particularly useful for anyone reviewing the document, enabling them to quickly locate and assess changes without having to read through the entire document again.

The other options do not accurately capture the primary function of a change bar. While new sections added or corrections made might involve changes, those aspects are not specifically indicated by a change bar. Similarly, updates on publication dates are not represented by a change bar; such information is usually noted in a different manner within the document. Therefore, the change bar's specific role as a marker of changes made to the text reinforces its importance in documentation management.