The purpose of this paper is to examine arrow design in relation to the type of pointing, connecting, or processing involved. Three possible approaches to the investigation of arrows as graphic communication include research: by arrow function, relating message structure to arrow design, and linking user expectations to arrow design. The following functions emerge following a subjective survey of existing arrows: identify (one-point functions); connect or link (two-point functions), and direct (imperatives directing action and describing processes). Content, context and style are message-related variables that arrow design should serve to interpret. Research design must consider reader expectations of arrow types. Three categories of arrow rules exist: (1) technical rules governing arrow usage appear in such fields as mechanical engineering, traffic management and international signage; (2) formal rules in disciplines where arrows serve in flow charts and mind mapping activities; and (3) informal rules in general sign situations, cartooning, and other areas. Nine figures present examples of various arrow types; an arrow clarity survey form is also provided. (AEF)