A manual is when you ride on the back two wheels of the skateboard.
A variant of this trick is preformed one footed. Thus calling it the One footed manual.
... Clinton (162) Charles C. Pinckney[?] 14 Federalist Rufus King (14) Other elections: 1792, 1796, 1800, 1804, 1808, 1812, 1816 Source: U.S. Office of th ...