Guide for Libellus
December 2005 Libellus was resurrected on a new server. The reconstruction was not complete, not all files had been backed up. And links are no longer checked. But the timeless content remains the same.
When you arrive at the main page of Libellus, there's a menu of concepts to the left above.
There's more than one kind of concept in Libellus. All concepts have a chapter, and are in the alfabetical list of concetps. Primary and secondary concepts are also in the menu to the left above. Finally primary concepts (those above the line in the menu) are good starting points for reading the book, and they represent big headlines in Libellus.
When you choose a concept in the menu, a concept map appears. The chosen concept is in the concept map, on the far left. Lots of other concepts, connected to the first one, are also in the map. Now you can choose a chapter by clicking the map. Primary concepts are emphasized on the concept map. If a concept map for one primary concept contains another primary concept, the map won't continue to the right of the other concept - you will then have to choose the concept map for that other concept to get the rest of the story.
A concept is read by making sentences of the 2 concepts and their relation. On the right e.g. it says "Database manipuleres af SQL", "Database optimeres vha. normalisering" and"Database beskrives af E/R-diagram".
By choosing "No concept map", you can close the concept map, without choosing a concept.
When you have chosen a concept, there's also a small concept map at the bottom. Here you can click ahead to the next concept.
If you later choose a big concept map again, the concepts, you have already read about, are highlighted.
Most of the concepts draw on a common example: that we are developing a program to play "Battleships" online.
There are also other ways of reading the book - the socalled emergency exits. You get access to these by hovering the mouse over the exit-sign on the left. Here you can choose an alfabetical list of concepts and sources, a printerfriendly version containing all chapters, this guide and a chapter about the background for Libellus. And you can change the language, between Danish and English.
There's links to sources lots of places. The alfabetical list of concepts also has a list of sources - this is the same list of sources, you will find in your curriculum. If a source name contains the word "(obl.)", you are obligated to know what the source describes. There may also be a word to say whether this source is for your class or not.