Vi
Links
The Editor http://www.vim.org
A good place to start: The Famous Inter-Active micro-manual for new vi users. Available in five languages. http://www.navigare.org/vi-muman.html
[http://www.ibs.uni-bielefeld.de/src/Vi vi] in der [http://www.ibs.uni-bielefeld.de/src/ Scientific Resource Collection]