Any thought or idea expressed briefly in a plain or secret language, prepared in a form suitable for transmission by any means of communication.
An arbitrary amount of information whose beginning and end are defined or implied.
Record information[?] expressed in plain or encrypted language and prepared in a format specified for intended transmission by a telecommunications system.
... because it discriminates between three qualitatively different cases:
If the discriminant is zero, then there is a repeated solution x, and this solution is real. ...