Research has shown that organization plays an important role in memory. The present study applies these findings to the design or a command language. The concept or orthogonility is used to maximize the internal organization of a text editing command language. This orthogonal language is compared to an organized, but non-orthogonal, and an anti-organized language on measures of predictability, recall, and performance. Subjects in the orthogonal language condition performed better than subjects in the other conditions on all measures. General steps necessary to design an orthogonal language are discussed.