Move Tool (v)
The Move tool would seem to be one of the most simple tools available in Photoshop with just one option in the Tools menu. You can move and resize tool-based image map areas by dragging. You can also move and resize rectangular and circular image map areas using numeric coordinates.
Tip: The shortcut key for the Move Tool is 'V'. If you have the Photoshop window selected press V on the keyboard and this will select the Move Tool.