What does illastration mean?

"Illastration" appears to be a misspelling or a variation of the term "illustration," which refers to a visual representation or depiction used to clarify or enhance a concept, idea, or narrative. Illustrations can be found in various forms, including drawings, paintings, and digital images, and are commonly used in books, magazines, and advertisements. If "illastration" has a specific context or meaning that differs from "illustration," please provide more details for clarification.