/**

 \page quicktour Quick Tour to LEMON

 \ref graphs "Graph structures"

 play a central role in LEMON, so if you are new to it,

 you probably should start \ref graphs "here".

 You can also find that page along with others under

 <a class="el" href="pages.html"> Related Pages </a>.

 If you are 

 interested in data structures and algorithms in more details, then

 you should browse the reference manual part of the documentation.

 Section <a class="el" href="modules.html"> Modules </a>

  is a good starting point for this.

 */