Applying four basic visual steps to the alphabet gives us at least two 3D logical structures for representing the visual right and left boundary characteristic of letters. The key characteristics of these structures are also key visual characteristics associated with Dyslexia. Two other matrices are also presented: a 2D matrix from an ox-plowing orthogonal traversal and a transpose matrix. These structures show the combined tightly-coupled, multidimensional, and multipurpose visual properties of the lower-case alphabet. The common properties of letter as flags, triggers, and boundary destinations are presented as candidates for modeling in UML. Conceptual analog letter circuits are used to describe the human complexity and variation in processing directions from the left boundary, the right boundary, and the symmetric letters.