Lets you reposition UVs in the UV Editor without using a manipulator. You can also accomplish this with the Move Tool by middle-dragging UVs.
To open the Tweak UV Tool, select from the UV Editor menus.
The following options appear in the
Tool Settings window when you select
Tools > Tweak > 
.
Tweak UV Settings
- Tool Snapping
- Specifies the size of the snapping area around the
Tweak UV Tool manipulator. By default, the manipulator snaps to the nearest UV. Increase the
Tool Snapping value for a greater snapping effect. The default value is 10.
Tip: You can also adjust Tool Snapping by double-clicking the Tweak UV Tool
icon in the
UV Editor toolbar.