void GroupRows(
	int firstRow,
	int count,
	int outlineLevel,
	bool visible
)

Sub GroupRows ( 
	firstRow As Integer,
	count As Integer,
	outlineLevel As Integer,
	visible As Boolean
)

void GroupRows(
	int firstRow, 
	int count, 
	int outlineLevel, 
	bool visible
)

abstract GroupRows : 
        firstRow : int * 
        count : int * 
        outlineLevel : int * 
        visible : bool -> unit