Example 1 square 50.

CARTESISCH ABSOLUUT COÖRDINATIESTELSEL.

Input : line of l
Enter
50,50 = startpunt : 50x,50y
100,50 = 2de punt 100x,50y
100,100 = 3de punt 100x,100y
50,100 = 4de punt 50x,100y
close of c = endpoint en startpoint close, the square is drawn.

This you will see in the dialog rule.
Command: l
LINE Specify first point: 50,50
Specify next point or [Undo]: 100,50
Specify next point or [Undo]: 100,100
Specify next point or [Close/Undo]: 50,100
Specify next point or [Close/Undo]: c

CARTESISCH RELATIEF COÖRDINATIESTELSEL.

Input : line of l
Enter
50,50 = startpunt : 50x,50y ( absoluut )
@50,0 = 2de punt vanaf startpunt : 50x , 0y
@0,50 = 3de punt vanaf punt 2 : 0x , 50y
@-50,0 = 4de punt vanaf punt 3 : -50x , 0y
close of c =endpoint en startpoint close, the square is drawn.

This you will see in the dialog rule.
Command: l
LINE Specify first point: 50,50
Specify next point or [Undo]: @50,0
Specify next point or [Undo]: @0,50
Specify next point or [Close/Undo]: @-50,0
Specify next point or [Close/Undo]: c

The first one is with absolute coordinates,
the second one with relative coordinates

Greetsings,

Danny