Annotation Sections

Each annotation can contain multiple sections. Note the following:

An annotation section is created every time you append information to the annotation; this is similar to the way messages are appended in email systems.
You can only append to the bottom of the annotation text.
You cannot modify previously created comments.
Because you can type over the entire annotation text area, it appears that the existing text is being erased, but it is not. A message about the existing text informs you that the additions have been accepted and that changes to pre-existing text are ignored.
Any information added in this way is stored in a new section that appears at the end of the note.
Once a section has been saved, its contents cannot be changed.