Definition: Supplemental information is an optional part of the definition of a lexical unit, containing culturally or logically expected information. To strike the palms of the hands together, as in applauding.

Does supplementary mean optional?

As adjectives the difference between supplementary and optional. is that supplementary is additional; added to supply what is wanted while optional is not compulsory; left to personal choice; elective.

What does supplemental text mean?

sup·ple·ment

Something added to complete a thing, make up for a deficiency, or extend or strengthen the whole. 2. A section added to a book or document to give further information or to correct errors. 3. A separate section devoted to a special subject inserted into a periodical, such as a newspaper.