2011

Deferred Perpendicular snap mode is automatically turned on when the object
you are drawing requires that you complete more than one perpendicular
snap. You can use a line, arc, circle, polyline, ray, xline, multiline, or 3D solid
edge as an object from which to draw a perpendicular line. You can use
Deferred Perpendicular to draw perpendicular lines between such objects.
When the aperture box passes over a Deferred Perpendicular snap point, an
AutoSnap tooltip and marker are displayed.
Tangent
Snaps to the tangent of an arc, circle, ellipse, elliptical arc, or spline. Deferred
Tangent snap mode is automatically turned on when the object you are
drawing requires that you complete more than one tangent snap. You can use
Deferred Tangent to draw a line or xline that is tangent to arcs, polyline arcs,
or circles. When the aperture box passes over a Deferred Tangent snap point,
a marker and an AutoSnap tooltip are displayed.
NOTE When you use the From option in conjunction with the Tangent snap mode
to draw objects other than lines from arcs or circles, the first point drawn is tangent
to the arc or circle in relation to the last point selected in the drawing area.
Nearest
Snaps to the nearest point on an arc, circle, ellipse, elliptical arc, line, multiline,
point, polyline, ray, spline, or xline.
Apparent Intersection
Snaps to the visual intersection of two objects that are not in the same plane
but may appear to intersect in the current view.
Extended Apparent Intersection is not available as a running object snap.
Apparent and Extended Apparent Intersection do not work with edges or
corners of 3D solids.
368 | Chapter 5 D Commands