Portable file names

[Dar Scott]

On Thursday, October 17, 2002, at 08:28 AM, Rob Cozens wrote:

> You've made your position on file name extensions clear; but let me ask 
> this:  Might it be a good idea to exclude extensions on files one does NOT 
> want the user to open by double-clicking?

Are there extensions that, by convention, are never associated?  (and not 
offensive)  Maybe one of those could be used.  Or some arbitrary extension.
   As in:

private_data.rob

Dar Scott