See also: How to time songs
Timing consists of a song's offset, beats per minute (BPM), and meter. Correct timing on beatmaps is necessary for players to maintain accuracy while playing. Incorrectly timed beatmaps cannot pass through the beatmap ranking procedure.
Timing points can be added from the
Timing and Control Points window in the editor (default shortcut
F6). Timing points divide a song into timing sections to accurately reflect changes to a song's timing.
An uninherited timing point, displayed as a red line, is the base for a timing section's BPM, offset, and meter. Every beatmap must have at least one red line, however some songs require multiple due to more complex composition or timing inaccuracies caused by live performance.
An inherited timing point cannot be placed before an uninherited one, because it would not inherit any settings.