why "-R" und not "-r"?

[Heino Tiedemann]

Hi There,

one question about this antry in UPDATING:

,----
| 20061221:
|    AFFECTS: users of security/gnupg
|    AUTHOR: kuriyama at FreeBSD.org
| 
|    The security/gnupg port was upgraded to 2.0.1 (with securty fix)
|    and good-old gnupg-1.4.6 was repocopied to security/gnupg1.
| 
|    Both of security/gnupg (2.x) and security/gnupg1 (1.4.x) are
|    designed not to conflict with each other.  So you can use
|    security/gnupg1 for gpg(1), and use security/gnupg for gpg2(1)
|    commands.
| 
|    All directly dependents are $PORTREVISION bumped, so portupgrade -R
|    gnupg will works fine.  After portupgrade, you will have both of
|    gnupg-2.0.1 and gnupg-1.4.6.
`----


Why "portupgrade -R gnup"? Isn't it "portupgrade -r gnup"? 

Heino