Sets left header text.
Sets left header text.
Macros can be used:
Like "Page " + sheet.PageNumberMacro + " of " + sheet.PageCountMacro
See PageNumberMacro, PageCountMacro, DateMacro, TimeMacro, FileNameMacro and SheetMacro for available macros for headers and footers.
Note that OpenOffice up to current version when this is written (3.2) will ignore headers and footers written in the Excel XML format. In the OpenOffice bug base that issue is filed as 111187.