proc main(args) { var a = "Hello"; "a.length() = ", a.length(), '\n'; "a.subr(1,3) = ", a.subr(1,3), '\n'; "a.reshape(3,5):\n", a.reshape(3,5), '\n'; "1.concat(2).concat(3) = ", (1).concat(2).concat(3), '\n'; }