...
Running snaps are snaps that are constantly active, as opposed to one-time snaps invoked by SEKEs and the local menu. You can turn on running snaps by:
Selecting items from the Snaps menu.
Clicking the icon or combination of icons on the Snap Modes toolbar.
Using the *DrawO Right click on the snap button next to the Coordinate Fields, and check the desired snaps.
Use hotkeys. You can view these in the Snaps menu. For example, Shift+V turns on Vertex snap.
...
If you want to use a certain snap once, but do not want to have the particular snap mode constantly in use, you can use local snaps. These are one-time snaps that you can select from the Local Snap item of the local menu. You can also used use SEKE's (hotkeys) to invoke one-time snaps.
...
Single Equivalent Keyboard Entries are keyboard shortcuts, or hotkeys, for quickly performing a function or snapping. SEKE's are affected by the snap aperture settings. If the sought snap point or type is not available within the aperture and Use snap Show snap aperture is turned on the SEKE will not snap.
To use a SEKE for snapping, place the cursor on the desired object and press the key. For example, place the cursor anywhere on a line and press M to snap to its midpoint.
The following is the list of SEKE snaps:
C - Center (snaps to the center of an arc, circle, or ellipse) G - Grid (snaps to the nearest grid point). H - Perpendicular Opposite (snaps to an endpoint so that the new line is bisected by an existing line) I - Intersection (snaps to the intersection of two objects) J - Perpendicular (snaps to the perpendicular projection to an object) M - Midpoint N - Nearest on Graphic (snaps to the nearest place touched by the cursor) Q - Quadrant Point (snaps to 0, 90, 180, 270 degree point of a circle, arc, ellipse) S - No Snap V - Vertex (snaps to endpoints of lines and arcs)
In the LTE Workspace you must use the ALT key simultaneously wijth SEKE. I.e ALT+N