As you sketch, each Sketch Snap allows you to immediately snap to selected entities. All Sketch Snaps are enabled by default, with the exception of Grid. Snap settings allow you to control all Sketch Snaps. The Quick Snaps toolbar, the Quick Snaps. flyout on the Sketch toolbar, or the shortcut menu are all ways to get to Sketch Snaps.
Quick Snaps are single-action Sketch Snaps that happen instantly. From start to end, sketching any sketch entity (such as a line) is a single operation. When you select a Quick Snap, all other Sketch Snaps are hidden, allowing you to concentrate on a single capability.
Select Options or Tools > Options from the menu bar.
Select Relationships/Snapshots from the drop-down menu.
To influence all Sketch Snaps, choose or clear Enable snapping.
Select or clear the appropriate Sketch Snap under Sketch Snaps.
Snap, also known as Smart Window, is a Microsoft Windows 7 feature that allows users to view two windows side by side without needing to resize them. To snap a window to the left, hold down the Windows key while pressing and holding the left arrow.