+<tag/<tt/execute-builtin <var/service-name/ <var/service-arguments//
+<item>
+Executes the builtin service <var/service-name/. These builtin
+services display information about the server and/or the request, and
+ignore any arguments passed from the service side except possibly to
+print them as part of their output. They write their results to their
+standard output (i.e., wherever file descriptor 1 is directed). The
+builtin services are:
+
+<taglist compact>
+<tag/<tt/execute//
+<item>
+Displays the execution settings, defined variables,
+arguments, etc. with which the builtin service was invoked.
+
+<tag/<tt/environment//
+<item>
+Displays the environment variable settings with which the builtin
+service was invoked.
+
+<tag/<tt/parameter <var/parameter///
+<item>
+Displays the values of the service configuration language parameter
+specified.
+
+<tag/<tt/version//
+<item>
+Displays the version string and compilation details of the uservd
+server program.
+
+<tag/<tt/reset//
+<item>
+Displays the default reset configuration (evaluated when <prgn/reset/
+is found in a configuration file, or when an error is caught by
+<prgn/catch-quit/).
+
+<tag/<tt/toplevel//
+<item>
+Displays the top-level default configuration (the configuration data,
+evaluated by the server, which calls all the other configuration
+files).
+
+<tag/<tt/override//
+<item>
+Displays the top-level override configuration (the configuration data,
+evaluated by the server, which causes all the other configuration data
+to be parsed).
+
+<tag/<tt/help//
+<item>
+Displays a list of the understood builtin service names and arguments.
+</taglist>
+
+In the future other builtin services may be defined which do more than
+just print information.
+