VITRAGE is a simple and powerful HTML extension ("extra advanced SSI") and on-the-fly HTML optimizer for Apache 1.3.x web server.
VITRAGE Apache module allows extending HTML with new tags, scenarios, variables, conditional constructions, iterations, etc.
It can also optimize HTML by stripping leading and double spaces, empty lines, DOS-like CRs.
This site is supported for Russian-speaking web developers only, but you can still download the source of the module and install it.
Feel free to contact the module author by e-mail: firstname.lastname@example.org.