# How to Handle Script Changes in a New Play

> The playwright is still rewriting, and you got new pages again this morning. How to keep track of which version you're on, unlearn the old line so it doesn't come back under pressure, drill only what changed, decide when to memorize, and handle the freeze in previews.

- URL: https://www.offbook.com/blog/script-changes-in-a-new-play
- Published: 2026-10-17
- Last updated: 2026-10-17

Day nine of rehearsal. You finally have Act One in your body, and the stage manager walks in with a stack of fresh pages. Two of your speeches are shorter. One scene has a new ending. And the line you nailed yesterday now has three different words in the middle.

This is what working on a new play is like. The playwright is in the room, hearing the play for the first time with real actors, and the script changes because of what they hear. An actor in a UT New Theatre production described it plainly in a [department interview](https://sites.utexas.edu/theatredance-blog/2017/03/07/creating-new-work-with-utnt-ut-new-theatre/): whole sections cut, and characters changing through new pages almost every day.

The short version: keep a clean record of which version you're holding, learn the meaning of each scene before the exact words, and when a line changes, drill the new one from its cue until it beats the old one. Don't keep running the old version "just for now". Then, once the show freezes, stop rehearsing alternatives and run only what you'll play.

## Know which version you're holding

Half the trouble with rewrites isn't memory. It's paperwork. If you can't say for certain which version of page 34 is current, you can't learn it.

Stage managers have their own systems for this, and they don't all agree. In an [SMNetwork forum thread on colored paper for new works](https://smnetwork.org/forum/stage-management-plays-musicals/new-works-script-changes-with-colored-paper/), stage managers debate printing each round of changes on a new color. Some tie the color to the revision rather than the day, so they don't need a new color for every rehearsal. Others dropped colors and just reprint pages with the date. One benefit they mention: color lets anyone see at a glance whether an actor has the right page.

Behind the colors, there's usually a **change log**. The Playwrights Realm's guide ["Did You Get Those Script Changes?"](https://www.playwrightsrealm.org/aspiring-playwrights-articles/did-you-get-those-script-changes) describes it as a running document that records the page number in the rehearsal script and what was cut, added, or replaced. When a scene grows, new pages get numbers like 48A and 48B so the rest of the script keeps its page numbers.

You don't run the change log, but you can keep your own version of it in your script. A simple system that works whatever the stage manager uses:

- Write the date at the top of every new page the moment you get it, even if it's already printed there.
- Swap the new page in right away, and move the old page to a pocket at the back of your binder instead of throwing it out, in case a cut comes back.
- Mark every changed line on the new page with a small star in the margin and the date beside it, so you can find this week's changes in seconds.
- Keep a list on the inside cover: date, page, and one line saying what changed for you.
- Mark everything in pencil. Changes made in rehearsal often get changed again.

If you can't tell whether a page is current, ask the stage manager before you learn it. Thirty seconds of checking beats a week spent memorizing a version nobody will say again.

## Why the old line keeps coming back

The hardest change isn't the new scene. It's the line that changed by a word or two. You learn the new version, and then, in the middle of a run, the old one comes out of your mouth.

Memory researchers call this **proactive interference**: something you learned earlier gets in the way of recalling something you learned later. [Simply Psychology's overview](https://www.simplypsychology.org/proactive-and-retroactive-interference.html) notes that interference is most likely when the two memories are similar, like an old and a new phone number. A rewritten line is about as similar as two memories get. Same character, same moment, same cue, nearly the same words.

Even a single word can split two versions of a play. The Folger Shakespeare Library's [introduction to its Hamlet text](https://www.folger.edu/explore/shakespeares-works/hamlet/an-introduction-to-this-text/) points out that the Second Quarto has Hamlet wish his *too too sallied flesh* would melt, while the Folio prints *too too solid flesh*. Two actors working from two editions would learn two different lines. That's the kind of change that trips you up in a new play, too: small enough to miss, close enough to the original that the old version slips back in.

So treat small changes as the dangerous ones. A brand-new speech is just new learning. A line with one word swapped needs you to learn the new word and stop saying the old one.

## Unlearn the old line by drilling the new one

You can't erase a line on purpose. What you can do is make the new version the one that comes back first when you hear the cue.

Retrieval practice is how. In Roediger and Karpicke's well-known study, summarized by [Washington University](https://source.washu.edu/2006/03/repeated-testtaking-better-for-retention-than-repeated-studying-research-shows/), students who tested themselves remembered the material better on a delayed test than students who reread it, while the rereaders felt more confident than they should have. Reading the new page over and over feels like learning. Saying it from the cue with the page covered is what makes it stick.

There's a second finding worth knowing. In a study by Potts and Shanks, ["Can testing immunize memories against interference?"](https://westminsterresearch.westminster.ac.uk/item/8z28w/can-testing-immunize-memories-against-interference), a reminder test on a first list of material, given the next day, helped it hold up when a second, competing list was learned afterward. Without that test, the second list disrupted the first. For an actor, it suggests that retrieval protects whichever version you retrieve, so the version you keep retrieving is the one you're strengthening. Every "just for now" run of the old line keeps it strong.

Here's a drill for each changed line:

- When a change is given out loud in rehearsal and there's no new page, cross out the old line with a single pencil stroke and write the new one in full beside or above it, so your eye never lands on the old words alone.
- Name what changed once, out loud, in plain words: "It's 'tonight' now, not 'tomorrow'." Naming the difference gives you something to catch the slip with. After that, say only the new version.
- Cover the line, read only the cue, and say the new version. Check it word by word.
- Repeat it a few times, then come back to it later the same day and again the next morning, from the cue each time.
- If the old version comes out, stop, say the new one correctly twice, and move on. Don't let a wrong version slide by unchecked.

First-letter cues are a good middle step for a line you half know. Paste the new version into our free [first-letter line memorizer](https://www.offbook.com/tools/first-letter-memorizer) and practice from the letters until you can drop them.

If you rehearse with Offbook, edit the changed dialogue in the scene so the voices read the current cues, then turn on Hide your lines. Your lines disappear while everyone else's stay visible, so you recall the new version from the cue; you can switch on first-letter cues as a step on the way, and hide the whole script for a final test.

Video: [Hide your lines](https://www.offbook.com/learn/hide-your-lines) (1:07)

## Drill only what changed, then put it back in the scene

When new pages arrive, the temptation is to rerun the whole act. That spends most of your time on lines you already know and only a little on the ones that changed.

Work the changes first. For each changed passage, practice three pieces together: the cue before it, the new line, and the line after it. The line after matters because a rewrite can change where your next thought comes from. If you want a clean page to drill from, try our free [cue script maker](https://www.offbook.com/tools/cue-script-maker).

Then put the change back in context. Run the whole scene at least once the same day, so the new line sits in the flow and not only in a drill. A change that works in isolation can still trip you when you arrive at it at speed, with the old rhythm of the scene around it.

### Ask why it changed

Research on how actors learn helps here. The APS Observer's article on Helga and Tony Noice's work, ["To be or, or ... um ... line!"](https://www.psychologicalscience.org/observer/to-be-or-or-um-line), describes actors learning through meaning rather than rote, breaking a script into beats or intentions. It also reports that lines learned with a matching movement were recalled better.

So for every real rewrite, ask what the playwright was after. Did the cut make your character more guarded? Does the new ending change what you want from your scene partner? If you can name the new intention, the new words have a reason to exist, and the old ones lose theirs. If the blocking changed with the text, learn the two together; our guide to [memorizing blocking](https://www.offbook.com/blog/how-to-memorize-blocking) covers how.

## When to start memorizing a play that keeps changing

It's tempting to wait. Why learn something that might be gone tomorrow? But waiting usually backfires: you arrive at your off-book date with the whole play to learn and no time to absorb the changes as well.

A better approach is to learn in layers, at different speeds:

- **The story and the beats, right away.** What happens, what you want in each scene, and where your thoughts turn. This layer rarely gets thrown out, even when the words do.
- **The settled scenes, word-perfect, early.** Ask the director or stage manager which scenes the playwright considers finished and which are still being worked. Learn the finished ones first.
- **The scenes in flux, loosely.** Know the beats and the big lines, but don't drill every word of a scene everyone expects to change.
- **Everything, word for word, by the off-book date.** The date doesn't move because the script is moving. If you're unsure what that day asks of you, see [what "off book" means](https://www.offbook.com/blog/what-does-off-book-mean).

One more thing to know early: rewrites are a reason to be accurate, not an excuse to paraphrase. The playwright is listening to the exact words to decide what to keep. If you change them, it's harder for them to tell whether a line is working. Our guide to [how to stop paraphrasing lines](https://www.offbook.com/blog/how-to-stop-paraphrasing-lines) helps if you drift.

## Previews and the freeze

Changes often keep coming once the show is in front of audiences. Previews are when the creative team watches how a new play lands and keeps adjusting it. At some point, often shortly before opening, the show is **frozen**: the script and staging are locked, and what you play that night is what you'll play for the run.

One reason for a freeze is the actors. Playbill's [1997 interview with composer Maury Yeston](https://playbill.com/article/titanic-interview-maury-yeston-com-329132) describes how he and librettist Peter Stone froze *Titanic* on April 17, less than a week before it opened, so the cast had time to learn the show as it stood without more changes coming.

In previews, you may rehearse new pages during the day and still play the current version that night. The rules that keep you safe:

- Never put a change in on your own. The stage manager or director tells the company which performance a change goes in, and everyone on stage needs to be on the same version.
- Before each performance, read the lines starred with today's date for anything that changed that day.
- Once the show freezes, move every old page out of your binder for good and run only the frozen version. You don't need the alternatives anymore, and every run of an old version is practice for the wrong line.

If an old line does come out in performance, keep going, and if your partner is thrown, give them the new cue or a line that gets the scene back on track. Afterward, note it, and drill the right version from its cue before the next show. Our guide to [what to do if you forget a line on stage](https://www.offbook.com/blog/forgot-lines-on-stage) covers the moment itself.

## Questions actors ask

### Should I memorize a new play early if the script keeps changing?

Yes, but in layers. Learn the story and beats at once, learn the scenes the playwright considers settled word for word early, and hold the scenes still in flux loosely until they settle. You still need everything word-perfect by your off-book date.

### How do I stop saying the old version of a line?

Stop practicing the old version at all, and practice the new one from its cue with the line covered, several times across a day or two. Name what changed once, out loud, so you notice the slip when it happens, and correct it every time.

### Do theaters always use colored pages for script changes?

No. Some stage managers print each revision on a new color, some reprint dated pages, and there's often a change log as well. Ask your stage manager how changes will be marked on the first day, and date every page yourself regardless.

### What does it mean when a show is frozen?

It means the script and staging are locked, often shortly before opening. After the freeze, the version you play is the version for the run, so you can stop rehearsing alternatives.