Comments is a collection of Comment objects for a worksheet
Creates a new Comments object
the author, text and ref options are required
Adds a new comment to the worksheet that owns these comments.
A sorted list of the unique authors in the contained comments
The index of this collection in the workbook. Effectively the index of the worksheet.
The part name for this object
The relationships required by this object
serialize the object
the vml_drawing that holds the shapes for comments
The worksheet that these comments belong to