HELP SYSCANCEL                                          J. Gibson, July 83

    syscancel(<word>)

SYSCANCEL removes any identifier currently associated with <word>, i.e. it
cancels the word as a variable or constant. E.g.

    vars x;
    1 -> x;

    x =>
    ** 1

    syscancel("x");
    x =>
    ;;; DECLARING VARIABLE x
    ** <undef x>

See also HELP
    *VARS          - on variables and their declaration
    *CONSTANT      - on constants and their declaration
    *SYSCANCELWORD - removes a word from the dictionary
    *CANCEL        - a macro simplifying the use of SYSCANCEL
    *SYSSYNONYM    - makes two variables or constants synonymous