I just want to write upside down!
The only thing I can think of is to create text in a graphics program, flip
it, and paste the image as an object in the XL workbook.
Or stand on your head?
Brevity is the soul of wit.
How about a workaround?
Type your text into another cell
Select that cell
Go to the cell to show the upside down text
Shift-Edit|Paste picture link
Then rotate the picture
You can put that original cell in a different worksheet so it's out of the way,
Google for "upside-down font"