0b51d423e9
Timeline IDs are sometimes presented to the user in hexadecimal format (for example in WAL file names). Add a few bits of information to clarify this. Author: Sébastien Lardière <sebastien@lardiere.net> Discussion: https://www.postgresql.org/message-id/flat/8fef346e-2541-76c3-d768-6536ae052993@lardiere.net