Using Precision Tools  
Restricting the cursor movement
 
 Concepts 
 
 Procedure 
 
 Commands 
 
Commands

GRID

It displays a dotted grid in the current viewport that is not plotted

LIMITS

It sets and controls the limits of the drawing area.  

ORTHO

It limits the cursor movement to the horizontal or vertical direction

POLAR

Enable - disable Polar Snap

RADIAL

Enable - disable Radial Snap

SNAP

It limits the cursor movement to specified intervals

SNAPS

It goes to the Snaps management dialog

TT

It creates a new Temporary Track point