Applies the next heading level style (Heading 1 through Heading 8) to the specified paragraph or paragraphs. For example, if a paragraph is formatted with the Heading 2 style, this method demotes the paragraph by changing the style to Heading 3.
expression Required. An expression that returns a Paragraph or Paragraphs object.
This example demotes the selected paragraphs.
This example demotes the third paragraph in the active document.