-loadPredefinedStylesheets.pl
-loadPredefinedStylesheets.pl { -u | --unload }
-loadPredefinedStylesheets.pl { -r | --reload }
-loadPredefinedStylesheets.pl { -h | --help }
+loadPredefinedStylesheets.pl [ uwobo_panel_conf_file ]
+loadPredefinedStylesheets.pl { -u | --unload } [ uwobo_panel_conf_file ]
+loadPredefinedStylesheets.pl { -r | --reload } [ uwobo_panel_conf_file ]
+loadPredefinedStylesheets.pl { -h | --help } [ uwobo_panel_conf_file ]
+
+If uwobo_panel_conf_file is provided, it's used as HTML file from which
+parse XSLT stylesheets, otherwise UWOBO_PANEL_CONF environment variable
+is used.