This refers to a rare 1985 UK release of the album Between Two Words by Wire Train on the CBS label, noted for having red paper labels on a black shell.
Examples: "Remarks on separating words" (2011) by Demaine et al., which discusses the smallest DFA needed to distinguish between two words. Between Two Words
This refers to research regarding the minimum number of single-character edits required to change one word into another. This refers to a rare 1985 UK release