unintelligible questions from pkgdb -F [ part of 5.2 portupgrade hairball ]

[Jay Moore]

So portupgrade prompted me to run 'pkgdb -F'... to fix a "stale" dependency. I 
complied, typed the requisite command at the prompt, and received the 
following in return:

--->  Checking the package registry database
Stale dependency: eel2-2.4.1 -> gtk-2.2.4_1 (x11-toolkits/gtk20):
gtk-1.2.10_11 (score:61%) ? ([y]es/[n]o/[a]ll) [no]
New dependency? (? to help): ?
 [Enter] to skip, [Ctrl]+[D] to delete,  [.][Enter] to abort, [Tab] to 
complete
New dependency? (? to help): .
Abort.

What is this "score" business?  61% of what, exactly?

And what are you telling the program to do exactly when you answer Yes, No or 
All?

And New dependency?... what does that mean?

If there are any docs on this, please supply a pointer. I read the pkgdb man 
page, but it shed little light on these questions.

Thnx,
Jay