I am just going thru some my favourite operas to add lyrics.
The tiny edit-box does'nt make that a particularly easy job as I often have to enter more than just a 4-line-verse. 
Would it be possible to enlarge the edit-box for editing Lyrics? May be there is something like this already and I just dont find it?
Many thanks
It's resizable! 
You can grab at the lower right/left corner and resize it to a comfortable size.
Embarrassing,... thanks that helps. 
Is there a way to navigate from one track to the next with that lyrics box staying open? That would ease things up considerably as well.
Unfortunately not, but I understand the suggestion and how it would improve navigation.
If you could take that suggestion up a for a future version, would be much appreciated.
I now need to to paste lyrics for each track into the lyrics box >> save and close the lyrics box >> close the extended tag box >> move to the next track, repeat the entire procedure 40 to 60 times for all tracks of the opera.... 
If it's only for pasting the lyrics, you could also add this as a field to the Tag Panel via Preferences → Tag Panel and UNSYNCEDLYRICS (it will be single-line, though) and use ⌥⌘ ↓ to save and navigate to the next file without loosing focus.
Most of time pasting is only the first step, I then need to edit the pasted text, correct line breaks, etc. etc....
I actually had the LYRICS tag in the Panel and noticed I could only ever edit the first line, so I took it off again and use the track browser
Having multi-line fields for the Tag Panel is also on my loooong list
Why not edit them in a document editor first, then copy/paste into mp3tag?
