[svn r15120] Added a few lines of information for optional sections

documentation/installation_guide.html

@@ -412,7 +412,7 @@ The fields used intensively by the Dokeos module are:<br />
 <hr style="width: 100%; height: 2px;" />
 
 <h2><a name="7._Oogie_PowerPoint__Impress_conversion"></a>7. Oogie PowerPoint / Impress conversion</h2>
-
+<i>This part is optional, only organisations wanting to convert Office documents to learning paths might want to read this.</i><br />
 Oogie converts your presentations coming from Ms-Office and OpenOffice into SCORM standardized e-courses or&nbsp;<span style="font-style: italic;">learning paths</span>.
 This feature needs OpenOffice to convert the slides and RED5 (optional)
 to record your voice on top of the slides through a Flash based
@@ -477,6 +477,7 @@ install the PECL library for PHP. <br /><br /><span style="font-weight: bold;">N
 <hr style="width: 100%; height: 2px;" />
 
 <h2><a name="8._Videoconferencing_and_audio-recorder"></a>8. Videoconferencing and audio-recorder</h2>
+<i>This part is optional, only organisations wanting to use the videoconference feature might want to read this.</i><br />
 We will now install and configure RED5 Open Source Flash server : the Dokeos RED5 webapplication. These will provide both <br /><ul><li>Videoconferencing and</li><li>Audio recorder for Oogie</li></ul>
 Oogie allows you to convert slides but also <br />
 <ul>
@@ -539,6 +540,7 @@ That's it! Click "Reconfigure extension" and your courses should be equipped wit
 
 <hr style="width: 100%; height: 2px;" />
 <h2><a name="9._Mathematical_formulas"></a>9. Mathematical formulas with LaTeX</h2>		  
+<i>This part is optional, only organisations wanting to use mathematical formulas inside the online editor might want to read this.</i><br />
 You can enable mathematical equations writing inside the Dokeos online editor (FCKEditor) by applying the following steps:
 <ul>
 	<li>1. Configure your Apache installation to add a cgi-bin directory that contains a symbolic link to the mimetex.cgi in <i>dokeos/main/inc/lib/mimetex/</i>(*see below)</li>