This section is an attempt to build a basic library used as reference by the geotools community ; inputs still needed!!!
The procedure we could follow is the following :
1) define the categories we want to use
2) Define for each category the symbols we want
-> buildings : church, hospital, ...
3) for each symbol define :
4) provide for each symbol the SLD file which could be used
5) provide a .zip with all these data
6) provide a tool if possible to help creating new symbols