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Date: Wed, 10 Nov 2004 16:23:42 -0500
From: munn <munn@umd.edu>
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Subject: portupgrade
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In using portupgrade I get a series of files that fail to upgrade with 
the message

because it is held by user (specify -f to force)

How is a file held and how can you unhold it?  Does the -f option unhold 
it or just ignore the hold?
What is the purpose of the hold?

With thanks