tmm-menubar question

[Ke Lu]

Hi, I have a question about tmm-menuba.

when I press M-x tmm-menubar,It shows the top menu
which looks like:
..
Possible completions are:
f==>File   e==>Edit   o==>Options b==>Buffers t==>Tools F==>Field m==>Message
a==>Attachments i==>Icicles h==>Help 

Then when I press o, It show [Options] submenu 
which looks like:
Press PageUp key to reach this buffer from the minibuffer.
...
b==>Blinking Cursor                    e==>Enter Debugger on Error
E==>Enter Debugger on Quit/C-g         m==>Mule (Multilingual Environment)
h==>Show/Hide

Then when I press h, It show [Show/Hide] submenu 
which looks like:
Press PageUp key to reach this buffer from the minibuffer.
...
t==>Tool-bar       m==>Menu-bar       T==>Tooltips       s==>Scroll-bar
f==>Fringe         S==>Speedbar       l==>Time, Load and Mail
b==>Battery Status i==>Size Indication L==>Line Numbers  c==>Column Numbers 

Now, I want to go back to [Options] submenu(one lever upper menu),
How can I do it?