numfile - The number of active worksheets in all currently open Excel Workbooks
origin - Returns the top left cell reference of the current worksheet (generally A1) and the top left cell that is currently visible in the scrolled area of the current worksheet.
osversion - Current operating system version
recalc - Current recalculation mode (either "Automatic" or "Manual")
release - Current version of Microsoft Excel
system - Current operating environment ("mac" = Macintosh or "pcdos" = Windows)
Syntax of error type is =ERROR.TYPE(error_val)
system - Current operating environment ("mac" = Macintosh or "pcdos" = Windows)
