Functional programming fits well with the use of descriptive markup in HTML and XML. There is also a good fit between S-expressions in Lisp and the means of expression in HTML and XML. These similarities are exploited in LAML (Lisp Abstracted Markup Language) which is a software package for Scheme. LAML supports exact mirrors of different versions of HTML. In the mirrors each HTML element is represented by a named function in Scheme. The mirror functions guaranty that the generated HTML code is valid. LAML has been used for both server side CGI programming and programmatic authoring of non-trivial static web materials. The programmatic LAML author can use the power of functional programming for the production of everyday web documents. Equally important, it is straightforward to define domain-specific web languages in Scheme syntax which parallel the advantages of XML.
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