olemus
dokumendimalli(de)st ja neisse paigutatavatest andmetest dokumenti (näiteks veebilehte) genereeriv instrument
= a tool that generates a document (for example, a web page) from the document template(s) and the data placed in them

ülevaateid
http://www.source-code.biz/MiniTemplator/templateEngineDiagram1.gif
http://freemarker.org/images/overview.png
https://en.wikipedia.org/wiki/Template_processor
https://www.fullstackpython.com/template-engines.html
https://www.sitepoint.com/overview-javascript-templating-engines/