function example (a, b, c, x, y, z, data) {
        this.a = a; this.b = b; this.c = c; this.x = x; this.y = y; this.z = z; this.data = data; }
example0 = new example(1, '', '', '', '', 26, ['alpha',-1] );
example1 = new example('', 2, '', '', 25, '', ['beta',-1.1] );
example2 = new example('', '', 3, 24, '', '', ['charlie',0.1] );