- An index range is specified by a member of the `Range' class.
- A ``primitive range'' is either collapsed (sequential),
or distributed over a particular dimension of a particular process array.
Range x = new Range(100) ; Range y = new Range(50, BLK, p.dim(0)) ; Range z = new Range(50, BLK, p.dim(1)) ;

`x`

is collapsed.`y`

is distributed blockwise over the first dimension of process array`p`

,`z`

over the second. - Two distributed primitive ranges are ``orthogonal'' if they are
distributed over different dimensions of the same process array. A
collapsed primitive range is orthogonal to
*any*primitive range except itself.

Bryan Carpenter 2002-07-12