VECTOR:

	A vector (a row matrix) can be created with the shorthand
	notation:

	d1 : d2

	or

	d1 : d2 : d3

	Where	d1 = vector start value
		d2 = vector ending value
		d3 = vector increment/decrement value

	The vector increment value takes precedence when the increment
	does not divide evenly into the difference between d1 and d2.
	If it is important for the end value (d2) to take precedence,
	then use the function linspace.

	If d2 > d1, and d3 is not specified, then an empty vector is
	created. 

	If d2 > d1, and d3 > 0, then an empty vector is created. 

	If d1 > d2, and d3 < 0, then an empty vector is created. 
