| Ccfg_defvalue_t | Data structure holding the default value given by the initialization macros |
| Ccfg_opt_t | Data structure holding information about an option |
| Ccfg_simple_t | Data structure holding the pointer to a user provided variable defined with CFG_SIMPLE_* |
| Ccfg_t | Data structure holding information about a "section" |
| Ccfg_value_t | Data structure holding the value of a fundamental option value |