[ale] how to hide a folder in thunderbird?

[hbbs at comcast.net (Jeff Hubbs)]

Preston Boyington wrote:
> i have been using my thunderbird with gmail's imap and like how things
> are going, but now i want to hide the "all mail" folder.
>
> is there a way  to do this?
>
>   
Click on the down-arrow to the left of the folder above it?