<p>The header string may contain special commands, i.e. placeholders for the page number, 

current date, or text formatting attributes. Most of these fields are represented by single letters with a leading ampersand ("&").

The page header is divided into 3 sections: left, center, and right. Each section is introduced by a special command ("&L", "&C", and "&R"). All text and all commands following are part of the selected section.

The following commands are available:

&L Start of the left section

&C Start of the centered section

&R Start of the right section

&P Current page number

&N Page count

&D Current date

&T Current time

&A Sheet name

&F File name without path

&Z File path without file name

&G Picture (file name)

&B Bold toggle

&I Italic toggle

&U Underline toggle

&E Double underline toggle

&S Strikeout toggle

&X Superscript toggle

&Y Subscript toggle

&"[FontName]" Set new font

&"[FontName,FontStyle]" Set new font with specified style. The style is in most cases "Regular", "Bold", "Italic", or "Bold Italic".