14.5. Creating PAM Modules
	New PAM modules can be added at any time for PAM-aware applications to
	use. For example, if a developer invents a one-time-password creation
	method and writes a PAM module to support it, PAM-aware programs can
	immediately use the new module and password method without being
	recompiled or otherwise modified. This allows developers and system
	administrators to mix-and-match, as well as test, authentication methods
	for different programs without recompiling them.
	
	Documentation on writing modules is included with the system in the
	/usr/share/doc/pam-<version-number>/
	directory (where <version-number> is
	the version number for PAM).