| bufr_t | Structure that holds the encoded bufr message |
| bufrval_t | Structure holding values for callbacks bufr_val_from_global and bufr_val_to_global |
| dd | Describes one data descriptor |
| del | Defines an element descriptor |
| desc | Structure that defines one descriptor. This can be an element descriptor or a sequence descriptor |
| dseq | Structure that defines a sequence of descriptors |
| sect_1_t | Holds the information contained in section 1 |
1.5.4