Stage 1

	On completion, you should be able to
	load line definitions into a drawing,
	create and manipulate layers,
	set working limits,
	zoom the display,
	set up grid points,
	set snap intervals,
	create circles, arcs, lines, and ellipse,
	modify a drawing by arraying, trimming, mirroring, lengthen, and offsetting,
	set the line type scale,
	change the properties of entities,
	use ortho mode to control orthogonal position of lines,
	compose a point from the x-value of a point and y-value of another point,
	make use of object snap facilities to locate points, and
	use the "FROM" option to establish a reference point.