Tweak mode lets you quickly move components whether you are currently using the Select Tool, Move Tool, Rotate Tool or Scale Tool. It’s useful for positioning objects in a scene or making quick adjustments to a specific mesh without switching to the Move Tool.
Tweak mode is compatible with all component types.
To move components with Tweak mode
Tweak mode activates and tool manipulators disappear.
You can also tweak edges and vertices when your cursor is outside of your mesh (in dead space). See Make a selection in dead space.