Orca's C clock outputs a counting value while D delay emits a bang on the modulo

Two timing operators are easy to confuse. C (clock) outputs the frame count modulo its mod value as a running number — 8C4 counts 0→1→2→3→0 at 1/8th speed, useful for driving indices like a track key. D (delay) instead outputs a bang (a trigger, not a number) when the frame hits the modulo — D8 bangs every 8th frame, useful for firing an operator like the MIDI colon. Rule of thumb: reach for C when you need an incrementing value to feed somewhere, D when you need a one-frame trigger. Both take a rate (left) and mod (right) argument.

Examples

.8C4… D804TCAFE .:03C… → C6 counts 0-3 driving the T track key; D8 bangs the MIDI note

Assessment

You need to step through a 4-note track once per 8 frames. Which operator supplies the track’s key input and which fires the MIDI note? Explain why swapping them fails.