Changing primary user ID?

[Kalle Svensson]

On Thu, 29 Jun 2000, Werner Koch wrote:

> On Wed, 28 Jun 2000, Kalle Svensson wrote:
> 
> > I wonder if it is possible to change the primary user ID of a key in
> > GnuPG? I'm about to change primary email address and would like to change
> 
> Also there is a "primary user id" flag specified in OpenPGP it's semantics
> are not very clear because you may have more than one of these
> "primary user ids".  A solution to this problem would be to reorder
> (while displaying) the user IDs based on that flag and the creation
> date of the user ID (as defined by the self-signature).

Alright. How do I do this then? I'm sorry if I'm being stupid, but I
see no references to reordering or indeed flags of this kind in the
documentation...

Thanks,
  Kalle Svensson