SLaTeX is a Scheme program that allows you to write programs or program fragments ‘as is’ in your TeX or LaTeX source. It is particularly geared to the programming languages Scheme and other Lisp dialects, such as Common Lisp. The formatting of the code includes assigning appropriate fonts and colors to the various tokens in the code (keywords, variables, constants, data), at the same time retaining the proper indentation when going to the non-monospace (non-typewriter) fonts provided by TeX.