You can specify an object snap whenever you are prompted for a point. By default, a marker and a tooltip are displayed when you move the cursor over an object snap location on an object.

If you need to use one or more object snaps repeatedly, you can turn on snap, which persist through all subsequent commands. For example, you might set Endpoint, Midpoint, and Center as running object snaps.

• On the Menu, click the Tools/Snap to turn snap on and off.
• On the Menu, click the Options/draw snap setting, and then click the object snaps that you want to persist