The pointing stick is an isometric joystick used as a pointing device. The pointing stick operates by sensing applied force (hence it is also known as an isometric joystick). The velocity of the pointer depends on the applied force. On a QWERTY keyboard, the stick is embedded between the "G", "H" and "B" keys. In attempting to avoid trademarked names and the ambiguity of the term "pointing stick", which commonly refers to a stick used to point at chalkboards or flip charts, various informal names have been invented, including "nipple mouse", "nub", "eraser mouse", "joy button", "clit mouse", and "keyboard clit".