Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.A WEb template system describes the software and methodologies used to produce web pages and for deployment on websites and delivery over the Internet. SUch systems process web templates, using a template engine. IT is a web publishing tool present in content management systems, software frameworks, HTML editors, and many other contexts. THe template and content resources are processed and combined by the template engine to mass-produce web documents. FOr purposes of this article, web documents include any of various output formats for transmission over the web via HTTP, or another internet protocol.