x2range:

Synopsis: Sets the plot range in x for the top x-axis.

Syntax: x2range ( start, end, I )

Description:

	Sets the plot range in x in the I:th plot-window. 
	x2range() uses the top x-axis.
	The x-axis will start at "start" and end at "end".
	
	If 'I' is not specified the default plot-window is used, see defplotwin().

See Also: range, range2, xrange, yrange, y2range, zrange
