Fixing broken dependencies

[Mark Ovens]

I used pkg_delete(1) to remove several unwanted ports but now 
portmanager reports them as missing because they are still listed as in 
the +CONTENTS of other packages, e.g. I pkg_delete'd koffice but 
portmanager now lists it as MISSING because it is still listed in the 
+CONTENTS of the kde meta-port as a @pkgdep.

What is the best way to fix this? If I run ``portmanager -u'' to upgrade 
all the ports I suspect that it will simply reinstall all the ports it 
considers are missing.

I'm sure I know how to do this, but I can't remember :(

Thanks.

Regards,

Mark