This is an old revision of the document!
The Translate Tool is a Viewport Tool that provides you with a manipulator in the Viewport, at the origin of the primary selection, that can be used to translate a node on world axes, local axes, object axes or screen axes - depending on options available in the Tool Settings pane when this tool is active. Also, between each of the axes are planes that allow you to freely translate the primary selected node on the two adjacent axes (XY, YZ, ZX).