Ladislav Mecir's REBOL Articles Several excellent technical articles about functions, context and binding, and the REBOL interpreter. Also dialects and scripts.
REBOL and RMAIL in Emacs By Sterling Newton. If you spend half your life in Emacs and deal with RMAIL then maybe this article can make your life a little better.
Build Simple Asynchronous Pluggable Protocols for Windows How to use the REBOL scripting language to create a protocol that works similarly to the javascript:// protocol, compiling and evaluating arbitrary REBOL statements and displaying the results. (August 26, 2003)
Tail recursion in REBOL Proper tail recursion is unusually difficult to achieve in REBOL. Joe Marshall describes the problem and solution. From LL1: Lightweight Languages Workshop. (November 17, 2001)