newton 51> maple
    |\^/|     Maple V Release 3 (University of Texas - Austin)
._|\|   |/|_. Copyright (c) 1981-1994 by Waterloo Maple Software and the
 \  MAPLE  /  University of Waterloo. All rights reserved. Maple and Maple V
 <____ ____>  are registered trademarks of Waterloo Maple Software.
      |       Type ? for help.
> read ttype;
Object [TENSOR, foo, foo, foo] IS of type tensor
Object [VECTOR, foo, foo, foo] IS NOT of type tensor
Object [TENSOR, foo, foo] IS NOT of type tensor
Object {foo, TENSOR} IS NOT of type tensor
>