1.1 --- a/doc/groups.dox	Mon Aug 31 10:03:23 2009 +0200
     1.2 +++ b/doc/groups.dox	Mon Aug 31 20:27:38 2009 +0200
     1.3 @@ -226,14 +226,6 @@
     1.4  */
     1.5  
     1.6  /**
     1.7 -@defgroup matrices Matrices
     1.8 -@ingroup datas
     1.9 -\brief Two dimensional data storages implemented in LEMON.
    1.10 -
    1.11 -This group contains two dimensional data storages implemented in LEMON.
    1.12 -*/
    1.13 -
    1.14 -/**
    1.15  @defgroup paths Path Structures
    1.16  @ingroup datas
    1.17  \brief %Path structures implemented in LEMON.
    1.18 @@ -246,7 +238,36 @@
    1.19  efficient to have e.g. the Dijkstra algorithm to store its result in
    1.20  any kind of path structure.
    1.21  
    1.22 -\sa lemon::concepts::Path
    1.23 +\sa \ref concepts::Path "Path concept"
    1.24 +*/
    1.25 +
    1.26 +/**
    1.27 +@defgroup heaps Heap Structures
    1.28 +@ingroup datas
    1.29 +\brief %Heap structures implemented in LEMON.
    1.30 +
    1.31 +This group contains the heap structures implemented in LEMON.
    1.32 +
    1.33 +LEMON provides several heap classes. They are efficient implementations
    1.34 +of the abstract data type \e priority \e queue. They store items with
    1.35 +specified values called \e priorities in such a way that finding and
    1.36 +removing the item with minimum priority are efficient.
    1.37 +The basic operations are adding and erasing items, changing the priority
    1.38 +of an item, etc.
    1.39 +
    1.40 +Heaps are crucial in several algorithms, such as Dijkstra and Prim.
    1.41 +The heap implementations have the same interface, thus any of them can be
    1.42 +used easily in such algorithms.
    1.43 +
    1.44 +\sa \ref concepts::Heap "Heap concept"
    1.45 +*/
    1.46 +
    1.47 +/**
    1.48 +@defgroup matrices Matrices
    1.49 +@ingroup datas
    1.50 +\brief Two dimensional data storages implemented in LEMON.
    1.51 +
    1.52 +This group contains two dimensional data storages implemented in LEMON.
    1.53  */
    1.54  
    1.55  /**