Newbie: alias a function name

[address@hidden]

Hi,

I would like to redefine:

M-x toggle-truncate-lines

as

M-x ww

Now, I've seen how to map keys to functions, but I haven't seen how to
alias a function name like toggle-truncate-lines to another name.  I'm
sure it's simple, but all I can find info on is key-binding.  Can
someone point me to help on this?

thanks,
matt