Trimming changes the elements in a way that the reference objects are moved to or from the real or the imaginary domain.
Steps:
1.	Click the reference trim-object.
2.	Click all of the objects to be trimmed.
fi	The objects are trimmed to the reference object.
Note:
3.	Lines:
	- Shorter lines are lengthened to the reference trim-object.
	- Longer lines retain the clicked side.
4.	Circles / Arcs:
	-A circle in CADintosh is a 360° arc with meeting point at 0°.
	- Selection mode endpoint:
	The arc/circle is trimmed so that it runs through the click point, and both endpoints lie on the reference trim-object.
	- Selection mode juncture:
	The selected circle segment with its juncture at the reference trim-object remains, and the rest of the Circle is removed.