Keyboard shortcuts and tabs with get info box

Question

I'm having several problems with the new get info box - and regret that I can no longer bring up the old version with the shift/right-click/get-info command.
1) No keyboard shortcut to advance from one track to the next, from inside the Get Info box. This used to be handled with Alt-N or Alt-P for Next and Previous. Now it seems to require mouse click on the error.
2) When tabbing through fields, it skips fields toward the bottom (album artist)
3) For works with the same title (most of my library is classical), I've tended to organize them by adding an extra space at the end of the Album line for the 2nd work with that title, or an extra two spaces for the 3rd work with that same title. This way they sort as distinct albums, since most works have multiple tracks. With the new Get Info, if I enter that extra space on the field in the box, it cuts it off when clicking ok. But if I just F2 the field on itunes list view, I can add it with no problem. This is a pain because I have to do it one track at a time, can't do it for multiple tracks at once. 

Answer 1

The functions printed in small letters on those keys are accessed by the fn key.
The following work on my MBP (albeit using Word 2008, but IIRC the same shortcuts worked in Word 2004):
Jump to start of document = Command-Fn-LeftArrow (aka Command-Home)
Jump to end of document = Command-Fn-RightArrow (aka Command-End)
Likewise,
Jump to start of line = Fn-LeftArrow
Jump to end of line = Fn-RightArrow
Page Up = Fn-UpArrow
Page Down = Fn-DownArrow
In this one (exceedingly rare) instance, Niel is incorrect.