If an option is set both in the environment and in the config file,
the environment takes precedence.
+The `$gsu_config_file` variable can actually contain more than one
+filename, separated by spaces. The config files are processed in
+order, so that an option that is specified in the second config file
+overwrites the definition given in the first. This is useful for
+applications which implement a system-wide config file in addition
+to a per-user config file.
+
___Checking config options___
The gsu config module defines two public functions for this purpose:
----------
- [bash](http://www.gnu.org/software/bash/bash.html)
- [dialog](http://www.invisible-island.net/dialog/dialog.html)
+- [The author's home page](http://people.tuebingen.mpg.de/maan/)