| bathead | MTZ batch descriptor |
| ccp4_spacegroup_ | Data structure of a space group descriptor |
| ccp4_symop_ | Kevin's symmetry operator |
| ccp4array_base | Definition for the array pre-header |
| CCP4PARSERARRAY | CCP4 Parser array Construct to hold the information about a parsed line |
| CCP4PARSERTOKEN | CCP4 Parser token Construct to hold the information about a single token |
| COMPLEX | Contruct representing a complex number |
| float_uint_uchar | Common data structure for floats, ints, and chars |
| MNF | Missing number flag for the MTZ data structure |
| MTZ | Top level MTZ structure, including crystal, symmetry and batch information |
| MTZCOL | MTZ column descriptor |
| MTZSET | Structure describing an MTZ dataset |
| MTZXTAL | Structure describing an MTZ crystal |
| POLAR | Contruct representing a polar coordinate complex number |
| SYMGRP | Symmetry structure |
