Intensional Markup Language

IML is a simple markup language that extends HTML. IML makes it practical for even unskilled authors to produce multiversion Web pages. The form and content of a particular version of a page are determined by the settings of a collection of parameters that specify (for example) layout, in terms of font and size, color, and background color; they can determine sections to be included or omitted, in particular, as droptext; which of a series components to present, and in which order; or they can determine a choice of language. An important advantage of the parametric approach is that members of a community can share pages by sharing parameters. The IML implementation uses ISE, a Perl-like CGI language with run time parameterization. The IML source is translated (once) into a corresponding ISE program which, when run with specific parameter settings, produces the appropriate HTML.