The input is block.param file from neigbhorhood generator.
The output file is block.details, containing detailed description of the blocks. This output is NOT a sequence of OpenGL commands! Rather, it should be in some higher level language that is specially designed. We suggest that these make a series of function calls (which in turn calls openGL). This detail commands will refer to various texture maps. These texture maps are defined in a file called "block.tex".
Some small parks can be modeled as a special kind of block.