This file contains different (sometimes not well-thought-through) ideas on the spec:
_
symbol will indicate that this is a negative capturing -- emission is required, but will be ignored in the output
_AB_C
A and B simultaneously
[AB]
[A!B]
[A*!B]
A !B C
or
A ^B C
[A*^B]
ensure timed gaps between emissions
A 5ms A
or
A (^A 5ms) A
A (!A 5ms) A
A (? B ) A
A |> ${ filter(x => x) }
(:id A)
Named groups emit Observables with id
property