POLYLIN allows you to create polylines.

A polyline is made up of one continuous entity, and
therefore, must always be manipulated as a unit. Because
this function supports methods similar to the LINE 
function, it may be helpful to use line entities for 
creating a part requiring extensive editing.

Use polyline entities when you assign line widths greater
than one. This results in "filled" or continuous corners 
on a shape with more than one side.

Closed polyline entities can be filled using the OUT/FIL
option described in CONTROL, ATTRIB. For easier selection,
fill desired polylines after you have finished 
manipulating them.

Create a polyline by choosing from the following options:

STRING - to create a polyline entity by indicating a 
series of points and stringing the vertices of the 
polyline to the desired shape.

RECTANG - to create a rectangular polyline entity (four
sides) by indicating positions for opposite corners, or by
specifying its width and height.

N-GON - to create a polyline polygon by specifying the
desired number of sides, rotation angle, radius, radius 
type (flat or corner), and center position.

SKETCH - to generate a continuous polyline entity along 
a selected number of vertices.

MESH - to generate a polyline mesh approximation of a 
two-curve, three-curve, or four-curve swept surface; a
tabulated cylinder; a surface of revolution; a sphere; 
or ruled surface.
