Function Key Toggles
The following function keys toggle the modes that they control.
F7
GRID
F8 ORTHO
F9 SNAP
You can see the status of the features at the left side of the status
line, above the command line window.
You can also toggle any mode by double-clicking the mode on the status
bar.
The GRID, ORTHO,
and SNAP toggles are transparent.
You can toggle the modes during execution of a command. The drawing must
be active for the toggles to work.