Question about itunes.

[Jessica L. Arnold]

I must be missing something. The area in the radio stream area. The  
menus or whatever for each genure are closed and I cannot open them  
with vo space bar.
And I think Mike covered it in his podcast. But I didn't hear what key  
stroke it was. And I listened to the vo tutorial too and still have no  
clue what keystroke it is to expand those menus.
Could someone help me with this?
Thank you.
Jessica