AutoGen is a tool designed to simplify the creation and maintenance of programs that contain large amounts of repetitious text. It is especially valuable in programs that have several blocks of text that must be kept synchronized.

Inextricably intertwined is a secondary project: AutoOpts -- a powerful command line option parser that does Configuration file

Configuration file

In computing, configuration files, or config files configure the initial settings for some computer programs. They are used for user applications, server processes and operating system settings. The files are often written in ASCII and line-oriented, with lines terminated by a newline or carriage...

 and Environment variable

Environment variable

Environment variables are a set of dynamic named values that can affect the way running processes will behave on a computer.They can be said in some sense to create the operating environment in which a process runs...

 command configuration as well. It also documents everything with generated man pages and generated texinfo invoking

Texinfo

Texinfo is a typesetting syntax used for generating documentation in both on-line and printed form with a single source file...

"texi" chapters.