Zone and polygon menus: using relative position to increase the breadth of multi-stroke marking menus.

Shengdong Zhao Maneesh Agrawala Ken Hinckley Zone and polygon menus: using relative position to increase the breadth of multi-stroke marking menus. 1077-1086 2006 conf/chi/2006 CHI http://doi.acm.org/10.1145/1124772.1124933 db/conf/chi/chi2006.html#ZhaoAH06