Add Style Reference

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+## positioning
+&L - code for "left section"
+
+&C - code for "center section".
+
+&R - code for "right section".
+
+(there are three header / footer locations, "left", "center", and "right"). When two or
+more occurrences of a section marker exist, the contents from all identical markers are concatenated, in the order of
+appearance, and placed into the section section.
+
+## font styles
+
+&font size - code for "text font size", where font size is a font size in points. 
+
+&K - code for "text font color" 
+    - RGB Color is specified as RRGGBB
+    - Theme Color is specified as TTSNN where TT is the theme color Id, S is either "+" or "-" of the tint/shade value, NN is the tint/shade value.
+
+&"font name,font type" - code for "text font name" and "text font type" where font name and font type
+ are strings specifying the name and type of the font, separated by a comma. When a hyphen appears 
+in font name it means none specified. Both of font name and font type can be localized values. 
+Although ISO/IEC 14496-22 permits commas in font family/subfamily/full names, name and font type
+, the lexically first comma in the font name is the one recognized as the separating comma. 
+
+&"-,Bold" - code for "bold font style"
+
+&B - also means "bold font style".
+
+&"-,Regular" - code for "regular font style" 
+
+&"-,Italic" - code for "italic font style"
+&I - also means "italic font style"
+
+&"-,Bold Italic" code for "bold italic font style"
+
+&S - code for "text strikethrough" on / off 
+&X - code for "text super script" on / off 
+&Y - code for "text subscript" on / off
+
+
+## Workbook info and page numbering
+
+&P - code for "current page #"
+
+&N - code for "total pages"
+
+&D - code for "date"
+
+&T - code for "time"
+
+&G - code for "picture as background" 
+
+&U - code for "text single underline" 
+
+&E - code for "double underline"
+
+&Z - code for "this workbook's file path" 
+
+&F - code for "this workbook's file name"
+
+&A - code for "sheet tab name"
+
+&+ - code for add to page #.
+
+&- - code for subtract from page #. 
+
+&O - code for "outline style"
+&H - code for "shadow style"