YIELD

Note: Deprecated / discouraged.; YIELD is not required in Retro Rocket BASIC and may be removed. It does not solve any real problem and simply wastes time.

YIELD was intended as a hint to let other work run, but Retro Rocket’s scheduler already pre-empts BASIC automatically at the end of every line.
A BASIC program cannot monopolise the CPU, so inserting YIELD calls has no scheduling benefit.

Behaviour

Executes as a no-op for control flow and timing; it does not pause or advance timers.
Does not improve responsiveness; the interpreter yields naturally after each completed line.
Adds a small amount of overhead if sprinkled inside loops.

Example (for illustration only)

PRINT "A"
YIELD
PRINT "B"

The output and timing are effectively the same as omitting YIELD.

Alternatives

If you want an actual pause, use SLEEP (seconds resolution).