function sc_isSubstring_at(s1, s2, i) {
    return s2 == s1.substring(i, i+ s2.length);
}
function sc_isSubstring_at(s1, s2, i) {
    return s2 == s1.substring(i, i+ s2.length);
}
function sc_isSubstring_at ( s1 , s2 , i ) { return s2 == s1 . substring ( i , i + s2 . length ) ; }
* META ((export #t))
* META (( export #t ))