Creating a cylinder by specifying an existing arc and an existing bounding plane.
Notice that the bounding plane (PL1) intersects the arc (CR1) which would cause two cylinder halves to be created. The specified point (P(3)) is closer to the right half, so it is displayed.
$$
$$ Declarations
$$
ENTITY/CR1,P(3),PL1,CYL1
$$
$$ Geometry Definition
$$
CR1=CIRCLE/0,0,1
P(1)=POINT/-1,1,-1
P(2)=POINT/-1,-1,-1
P(3)=POINT/1,0,1
PL1=PLANE/P
$$
$$ Cylinder Definition
$$
CYL1=CYLNDR/CR1,PL1,P(3)
Cylinder Bounded by an Arc and a Plane