Mark Wilkson wrote:
> Does anyone know if there is a "standard" list of these anywhere on the
> Internet? You know the kind of thing..
>
> .txt
> .doc
> .r1w
>
> And all the many, many others. It seems that there is no formaly way of
> assigning these but there must be a
> way of finding out whether a particular one has been used or not
> (generally).

I don't remember if you can some of the special characters in the extension
for short name files (i.e., $), but assuming you can either use all of them
(66 options per location, I think) or none of them (36 options per
location), the maximum number is

287,496 = 66**3
 46,656 = 36**3

Since both of these numbers is less than the sqrt of the current number of
products available in DOS/WIN, they've all been used :):):)

lb