Creating two lines by specifying the coordinates of their end points.
LN1 lies on the current work plane because only X and Y values were specified.
LN2 is defined in space because X, Y, and Z values were specified.
$$
$$ Declarations
$$
ENTITY/LN1,LN2
$$
$$ Line Definition
$$
LN1=LINE/-1,-1,1, 1
LN2=LINE/-1,1,1,1,-1,-1
Top View of Lines Created with Two and Three Dimensional Values