key edit question // adding a comment

[vedaal at hush.com]

is it possible to add a 'comment' to a key after it is made?

during key generation, gnupg asks if the user wants to enter a 
comment

example:
comment: (please, local signature only)

having this type of comment might alert people not to sign the key,
and decrease people's reluctance on having their keys on a server

(the ideal keyserver situation would be to allow only the key owner 
to upload his/her key to a keyserver, and to obtain whatever 
signatures desired on that key, directly from the signers, and then 
upload it)

anyway,
could not figure out how to add a comment to a key after it has 
already been generated

any ideas on how this could be done?

tia,

vedaal




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