29.12.2011 
- management of coordinate 
reference systems:
 - definition of coordinate reference 
systems
 
- definition of relationships between 
coordinate reference system
 
- changing spatial data between coordinate 
reference systems
 
- providing data on coordinate reference 
systems
 
- providing services on coordinate reference 
systems
 
determination of the coordinates 
of a position in a coordinate reference system
assigning coordinate reference systems 
to spatial data
calculating geometric properties 
like length and area based on spatial coordinates 
(geoinfometry, cartometry)
...