The way it looks to is as follows.

His example: $ordtok(4.1,46,nr)

The number 4 and 1 will be given the proper $ord after them and in reverse order.

It will give: 4th 1st

The problem I see is that if one of the items in the group ends with a non-number it is just listed as it is. Perhaps have it either remove it or error out.

If you use: $ordtok(4.1,46)

It will give: 1st 4th