A buffer is in (logical of physical) inventory point for a item at a certain location.
|name||non-empty string||The name of the buffer must follow the pattern “item @ location”, ie a concatenation of the next 2 columns.|
|location||location||Location of the buffer.|
|item||item||Item being stored in the buffer.|
Inventory level at the start of the time horizon.
Considered as 0 if left empty.