Index: /trunk/www/db_po/view-info.html
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--- /trunk/www/db_po/view-info.html	(revision 11596)
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+Configuration = set of program options. <br>
+The program options of all components running to operate the telescope
+can be set via <ul> 
+<li> database</li>
+<li> setup-file, e.g. program.rc</li>
+<li> or command line option</li>
+</ul>
+
+A history of the configuration inserted into the database is kept.
+Therefore, the configuration of the telescope at any time can be
+viewed,  and configurations of different timestamps can be compared.
+<br>
+<br>
+
+<u>The display</u>: 
+<ul>
+<li> additional (new) program options on the right side are displayed
+in <font color='green'>green</font></li>
+<li> additional (old) program options on the left side are displayed in
+<font color='red'>red</font></li>
+<li> program options where only the value has changed, are displayed in
+<font color='blue'>blue</font></li>
+<li> by default program, key, value and type are displayed. You can
+display additional columns (for the two configurations independently).</li>
+<li> for the time stamp, you can select between the 'pulldown' menus or
+a 'text input' where you can enter the timestamp. 
+<li> in case the timestamp is empty, the current configuration is
+shown.</li>
+<li> 'next/prev time stamp' and 'reset dates' directly issue the
+display and comparison of the configurations. When you select a
+timestamp by hand, you have to click 'show / compare'</li>
+<li> a subset of program options can be view by specifying the program
+and/or the key. </li>
+</ul>
+<br>