Other forms: textually
Anything textual has to do with writing. A textual analysis, comparison, or interpretation, has something to do with what is in a particular piece of writing (or text).
Textual comes from the Latin word textualis, the adjective form of textus, ("text"). If you see the word, it is always related to some written material. This word is most commonly used in the study of religion, literature, philosophy, or the law — any field requiring the careful examination of various texts. A textual tattoo is one that features writing instead of an image.