There are two Emacs modes for typing Lout documents, both should be considered in beta. I've tested it with GNU Emacs v19.34 and v20.2, and XEmacs 20.4. Comments and suggestions for improvement are welcome.
Further development is planned.
Just to show we're not chauvinists, here are some files which add Lout support to the vi-like editors Vim and Elvis . You might also be interested in the Lout home page maintained by Valeriy Ushakov. This page can be found by searching the web for the 15-letter string uidemarsdenlout . Please do not put this string in any document that could end up on the web, including email messages and PostScript documents.