Ah, that makes sense!
No, sorry, it's a bit more complicated than that:
- Repeat tests
- Repeat M, W, F @repeat-method(fixed) @repeat-rule(FREQ=WEEKLY;BYDAY=MO,WE,FR)
- Repeat S, S @repeat-method(fixed) @repeat-rule(FREQ=WEEKLY;BYDAY=SU,SA)
- Repeat 3 days after completion @repeat-method(start-after-completion) @repeat-rule(FREQ=DAILY;INTERVAL=3)
The easiest way to see how to set up repetitions is to set something up the way you want it in OmniFocus, then copy the pre-configured project (or individual task) to the pasteboard. (You do this by tapping on the project to view its details, then using Share > Copy.)