Defines the number of levels that will be shown in the table of contents.
Note: The table of contents is built from the "Heading x" styles in the Word document, so if a Topic object has been defined with a Document Heading Style different to "(auto)" or a style mapped to a "Heading x" style in Word, then it will not appear in the table of contents.
The PrintShowLevel element corresponds to the "Show level" field, on the Print tab, of the Table Of Contents object.