From: Jonathan Fine on
Thomas 'PointedEars' Lahn wrote:

> Probably you mean _indexes_ instead of dimensions. This can be worked
> around with a delimiter, though:
>
> if (typeof moves['0-1-0-0-1'] == 'undefined')
> {
> moves['0-1-0-0-1'] = 1;
> }

This notation is also used for locomotive wheel arrangements.
http://en.wikipedia.org/wiki/2-6-4
http://en.wikipedia.org/wiki/Whyte_notation

Not that I'm a train-spotter. But I did look at
http://en.wikipedia.org/wiki/4-14-4
which is a Soviet rival to Union Pacific's
http://en.wikipedia.org/wiki/4-12-2

--
Jonathan