This script adds the following functions for bunker silos:
1. The silo can be closed after opening so that it does not get wet during the rain. This can also be used to correct an error preventing further opening of an open silo.
2. If the fermentation in the silo is not completed, it can be opened again for further filling. In this case, the fermentation process will be lost.
3. The silo can be completely emptied.
4. The silo can be covered with various types of tarpaulins.