This document discusses the positions and terminology used in baseball. It lists the positions in both the infield (pitcher, catcher, first baseman, second baseman, third baseman, short stop) and outfield (right fielder, center fielder, left fielder). It also mentions different types of pitchers, coaches, ball materials, field sizes, innings, rules for substitutes and bases. Finally, it outlines the different levels in professional baseball from the major leagues down to the minor leagues.