+There are two separate user interfaces for PSPP.
+There is the command line interface, which responds to commands
+typed by the user.
+The command line interface is generally available on more platforms
+than the graphic user interface and since it doesn't require a
+graphics device it can be used from a remote terminal.
+Platforms which have a windowing system may also be able to support
+the graphic user interface.
+The graphic user interface can perform all functionality of the
+command line interface.
+In addition it gives an instantaneous view of the data, variables and
+statistical output.
+
+Whichever interface you choose, a basic understanding of the concepts
+used by PSPP is necessary before effective use of the system can be achieved.
+
+
+@menu
+* The command line user interface::
+* The graphic user interface::
+@end menu
+
+
+@node The command line user interface
+@section The command line user interface
+