How do I pull up the strings on my brand new curtains??

[PacificState]

Adulting dilemma (I am 52). Just received some new curtains and the strings on the header tape are machine stitched down on both edges. Do I need to snip the strings at one end? Or do I just start pulling without skipping the ends free? (They're quite big - I'm not convinced the string is strong enough to withstand being pulled while still stitched down at both ends.)

Very grateful for any new-curtain wisdom

I can't see that it's important, just that otherwise when you make the knot the middle string may have a longer 'tail' beyond the knot.

Because the the length of A and C to the knot is greater than the length of B to the knot.

Tie one end in a knot (knot all 3 strings together or they might disappear when when you put them.