to furnish (a book, magazine, etc.) with drawings, pictures, or other artwork intended for explanation, elucidation, or adornment.

to make clear or intelligible, as by examples or analogies; exemplify.

Archaic . to enlighten.

to clarify one's words, writings, etc., with examples

To prevent misunderstandings, let me illustrate.

adjective

accountable , decipherable , explicable , interpretable