Detta svar fick jag av min f.d lärare när jag var lite osäker på samma grej:
When writing a phone dialogue, do you have to cut everything up in new
scene headers whenever you want to cut in between the two persons talking
in different locations?
- No, you do NOT have to insert a new header for
phone dialogue. If you did, it would be unpleasant to read. Too choppy! But
you do need to indicate that the scene will CUT BETWEEN the two (or more)
locations. Or you need to indicate that the screen will SPLIT and both locations
will appear simultaneously on screen. Sometimes I start with the initial
location - let's say it's INT. GIRL'S BEDROOM - as the character (GIRL) dials a
number. Then in the stage direction (or action), I write: "SCREEN SPLITS to
include BOY in his bedroom as he answers the phone." Or if I don't want both
locations to be on screen for the entire conversation, I'll start with INT. GIRL'S
BEDROOM as she's dialing. Then insert a new header - INT. BOY'S BEDROOM -
indicating that we cut to the new location as the 2nd character (BOY) answers.
Then after his first bit of dialogue, I'll state in the action that the
"conversation continues, CUTTING back and forth between locations as needed."