Snapping to the grid helps you position the cursor when you want to select a Sketcher grid point. When snapping is enabled and you move the cursor near a grid point, the secondary cursor jumps, or snaps, to the grid point. Toggle Snap to grid in the Sketcher Options dialog box to enable or disable snapping. (By default, snapping is enabled when you start the Sketcher.) The behavior you choose for snapping applies to all sketches in the ABAQUS/CAE session. Sketcher preselection overrides snapping if a preselection point and a grid point are both close to the cursor position.
To turn snapping on or off:
From the bottom of the Sketcher toolbox, select the Sketcher customization tool 
.
The Sketcher Options dialog box appears.
From the General tabbed page, toggle Snap to grid.
When Snap to grid is on, the secondary cursor snaps to nearby grid points as you move around the sketch. Depending on the grid size, magnification of the viewport, and whether preselection is active, you may also be able to select other points in addition to the grid points and the existing sketch geometry.
When Snap to grid is off, the secondary cursor aligns with the primary cursor as you move around the sketch. You can select anywhere on the sheet.
After you have chosen the desired customization options, click OK to apply your changes and to close the Sketcher Options dialog box.
