STELF proper
Documentation out of dateLearn more
Additional Resources
Basics
Section titled “Basics”Documentation
A link seems rather unnecassary, if you need to provide one just copy the link off the top of your page
Twelf
Twelf is a great resource, and the wiki is what is in large part (haphazardly) cloned here
Twelf User's Guide
The Twelf User’s Guide (for Twelf version 1.4) is still the most authoritative reference for Twelf’s syntax, even though it predates some later Twelf 1.7 features. Available as HTML, Postscript, Gzipped Postscript, or PDF.
Editor Plugins
Section titled “Editor Plugins”Neovim
Scripts
Section titled “Scripts”Twelf to STELF
Developing STELF
Section titled “Developing STELF”Sources
Section titled “Sources”There are a number of sources pertaining to STELF, Twelf, and λΠ and more general λ* calculi. Among these resources are the following suggested additional readings:

