src/diagram.js
function shouldExclude(sets) {
        for (var i = 0; i < sets.length; ++i) {
            if (!(sets[i] in exclude)) {
                return false;
            }
        }
        return true;
    }
function shouldExclude(sets) {
        for (var i = 0; i < sets.length; ++i) {
            if (!(sets[i] in exclude)) {
                return false;
            }
        }
        return true;
    }
function shouldExclude ( sets ) { for ( var i = 0 ; i < sets . length ; ++ i ) { if ( ! ( sets [ i ] in exclude ) ) { return false ; } } return true ; }
checks that all sets are in exclude;
checks that all sets are in exclude ;