[D]

1. DEFAULT_CHARSET
2. DEFAULT_EXPIRE_AGE
3. DEFAULT_PORT
4. DEFAULT_USER
5. DEL_FD
6. DESIRED_FREE_COUNT
7. DESIRED_MAX_MAPPED_BYTES
8. DESIRED_MAX_MAPPED_FILES
9. DISABLE_GZ
10. DI_CONFIG
11. DI_ECHO
12. DI_FLASTMOD
13. DI_FSIZE
14. DI_INCLUDE