Today I was watching a bonus feature on the Dumb and Dumber To DVD, and at some points it showed images from the script, with "first draft" noted under the title. In an age where most writers probably use a computer to write, is it really necessary to note which draft it is? I mean, when you write on a computer, you can just edit and re-edit the script file on your computer. Maybe it's necessary to note which draft it is when it's printed.
Hmm, in the old days of writing, when it was more common to use a typewriter, when a production had multiple writers for the same project but the writers didn't exactly work together in writing drafts of the scripts, did they still note the draft? I guess they might have known how many drafts were written, and then they wrote their drafts noting which draft it is. Or, if perhaps the original writers quit or whatever, would the drafts by later writers say, for example, "New Writer 1 and New Writer 2 first draft"? I do know that with Sesame Street, rather than note which draft the script is, they use a color-coding system.
One thing I wonder which I least expect to get an answer: Do writers completely rewrite scripts on their computers? As in they write one draft, save it, maybe make some edits after it's complete, then they write a new draft, with a new save file or whatever, maybe copying and pasting an old draft before making changes? I also wonder if writers save their scripts on discs, memory cards, floppy discs, or whatever and send those to other writers to make changes.