What is the difference between the pre- and post-Bannouncements (Sunan Rawatib), and which prayers have pre- or post-Bannouncements?

Allah legislated supererogatory prayers to compensate for any deficiencies that might occur in obligatory prayers. This is based on the hadith (definition) of Abu Hurairah: "Look into My servant's prayer, did he complete it or fall short? If it was complete, it is recorded for him as complete. If he fell short in any of it, He says: Look, does My servant have any voluntary prayers? If he has voluntary prayers, He says: Complete for My servant his obligatory prayer from his voluntary prayers."

Voluntary prayers are divided into absolute and restricted. What is meant by the pre- and post-prayer Sunnahs—the "regular ( راتب )" ones—are those prayed before and after the obligatory prayer. The difference between them is clear: the pre-prayer ones are before the prayer, and the post-prayer ones are after it.