An illustration is a decor, analysis, or visual explanation of a text, idea or process. An illustration also implies providing an example, either in writing or in image form. The origin of the word “illustration” is late Middle English (in the sense ‘illumination; spiritual or intellectual enlightenment’): through Old French from Latin illustration, from the verb show. Contemporary illustration utilizes a large range of designs and techniques, including 3D modeling.
In contemporary illustration practice, 2D and 3D software application is typically used to produce accurate representations that can be upgraded easily and reused in a range of contexts.