Best to display dynamic dialog?

Hi!
I'd love to display long dialogues, BUT without showing them in large chunks. Each line of text should appear one second after the other, OR after a keypress of some sort.

I did manage to get something like that with Harlowe by using the (live: ) command, but even if it's okay for a passage or two, it would be a huge pain to apply this on many pages of dialogue.

I'll probably move to Snowman to enjoy more JS possibilities, but I still didn't find the solution I'm looking for.

How could I do so that between two lines of dialogue, simply adding a function call would make the dialog dynamic?

For exemple :

line1
pause(1);
line 2

or

line 1
wait_keypress();
line 2

Did you ever see or use something like that in Twine ? (I'm using Twine 2 but could switch to 1.4 if necessary)