New hole placement techniques are available in the synchronous environment.
When you place two hole occurrences on the same face within the same instance of the command, the plane automatically locks. All later occurrences lock to the plane until overridden by the user.
Aligns a hole with the midpoint of an edge. You can use the M key to align the hole with the midpoint on the highlighted edge. Upon hole placement, a horizontal/vertical relationship is created. You can no longer dimension to the midpoint of an edge.
Aligns a hole with the axis of an existing hole. When you pause the cursor over an existing hole, the hole center point highlights. Pressing the A key begins hold alignment. As you move the hole, alignment lines display on the face when the hole position is horizontal or vertical with the existing hole axis.
You can align the hole on other faces in the model. As you move the hole on other faces, the alignment lines also display. You may need to press the N key to highlight the edge on the face that is parallel to the alignment lines.
You also can position the hole on a circular face. The alignment lines display on the circular face as you move the hole over the circular face.
To learn more about these and other hole placement options, see Holes (synchronous environment).