UBOUND - a memory function that returns the upper bound (largest
         available subscript) for the indicated dimension of an array
 
Syntax
  UBOUND(array[,dimension])
    - array identifies the array
    - dimension, an numeric-expression that has an integer value, indicates
      the dimension of the array for which you want to see the smallest
      available subscript. Use 1 for the first dimension, 2 for the second
      dimension, etc. This is an optional argument for one-dimensional
      arrays.
 
See Also  <LBOUND>