This message belongs to the category of MIDI system realtime messages.
This message consists of a single byte of data. This byte is the status byte and has a value of 0xFB.
Playback resumes from the current song position, which could be set with the MIDI song position pointer message, or could be the point where MIDI playback was previously stopped. This is different from the MIDI start message with which playback always starts from the beginning of the sequence at MIDI beat zero.