Clutch fluid change: Question

[SINISTER]

I have read and watched videos and some people state the following regarding opening the bleed valve:
Jumping forward to the actual bleed process:

"You (now under the car with an 8mm (if I recall) wrench on the bleed screw call out "OPEN" and gently open the bleed screw and let some fluid out. ONLY KEEP IT OPEN FOR 1-2 SECONDS, then close it again. Call out "CLOSED"."

Or is it the following:

"Keep the bleeder open until the flow stops, then close the bleeder."


So which one is it? Short opening and closing intervals or until flow stops? (This is of course done after pumping pedal slowly 5 times and holding it down.) Perhaps this is different for different years?