HELP ISSTARTSTRING                               John Williams, Nov 1986

    isstartstring(<string|word:S>, <string|word:T>) -> <1|false>

The procedure ISSTARTSTRING returns 1 if the string (or word) T
begins with the characters in the string (or word) S, and <false>
otherwise. For example:

    isstartstring('ban', 'banana') =>
    ** 1

    isstartstring('ban', 'abandon') =>
    ** <false>

ISSTARTSTRING is defined in terms of the procedure *ISSUBSTRING_LIM
as follows:

    define isstartstring(s1, s2);
        issubstring_lim(s1, 1, 1, false, s2)
    enddefine;

The procedure *ISENDSTRING tests the 'opposite' circumstance, i.e.
whether one string is a final substring of another.

See also HELP * STRINGS, *ISSUBSTRING, *ISENDSTRING

See REF * STRINGS
