Turn on spell check (English)

setlocal spell spelllang=en_us

Replace something with newline

Either one works:

%s/&/r/

%s/&/^V-^M/ (that's Ctrl-V and Ctrl-M)

Getting matchit.vim to work in vi

I had to add the following line to my .vimrc to get matchit to work properly in cygwin

filetype plugin index on

See also: Tips about vi and Cygwin