The project tree is sequentially parsed and interpreted with respect to three different scopes.
The Global3D scope (backgroundcolor white) allows for global parameters such as index-counts or global DispoHypParam and so on. This scope also allows global exports at the end of parsing (e.g. Grid3DOutput).
When the parser enters the Domain3D scope (backgroundcolor red, rather rose) the global parameters are passed to this scope. Within this scope the 3D bladerows are constructed.