Section 7 of the manual provides overviews on various topics, and describes conventions and protocols, character set standards, the standard filesystem layout, and miscellaneous other things.
Page 4
- vacuum
- VACUUM - 垃圾收集以及可選地分析一個數據庫
- x25
- x25, PF_X25 - ITU-T X.25 / ISO-8208 協議介面。