Parse a font size string (e.g., "11pt") to half-points.
DOCX uses half-points for font sizes, so "11pt" becomes 22.
The font size string (e.g., "11pt")
The default size to return if parsing fails
The font size in half-points
Parse a font size string (e.g., "11pt") to half-points.
DOCX uses half-points for font sizes, so "11pt" becomes 22.