basic information concerning macports + sth else

[olivier SAINT-EVE]

hello,

I wonder how to inform macports that I have manually installed a  
tar.gz which is in its port-list, the tar.gz being often more recent  
that the version in the port-list.
so my question is double:
-inform macports (purpose: activate the port)
-upgrade the port

Also, I wonder the rule of the message variants:universal after the  
info command. I think this means that it is possible to download a  
dmg. Is it true?

thank you,

lolveley. 
  
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