Available sheet properties

Properties that can be set with $sheet->set{$property}()

Property name	Possible value
orientation	string
paperSize	integer
scale	integer
fitToPage	boolean
fitToHeight	boolean
fitToWidth	boolean
columnsToRepeatAtLeft	array
rowsToRepeatAtTop	array
horizontalCentered	boolean
verticalCentered	boolean
printArea	range
firstPageNumber	integer