In the models we describe, the user's cognitive … a set of Methods for achieving the goals, … a model specified by these components a GOMS … [p. 144] A goal is a symbolic structure that … which it may be accomplished [e.g., GOAL:EDIT-MANUSCRIPT] … Operators are elementary perceptual, motor, or cognitive acts, … the task environment [e.g., GET-NEXT-PAGE]. … [p. 145] A method describes a procedure for accomplishing … [In GOMS a method is] a conditional sequence of goals and operators, … the task environment. … Methods are learned procedures that the user already … [p. 146] In a GOMS model, method selection is … is true in the current task situation, then …
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