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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.233

Screen-reader mode pauses before redrawing

Use it now
Useful4 Signal3
Accessibility Notable not in their notes

Screen-reader mode waits briefly before redrawing so bursts are announced once; tune the delay with an env var.

CLAUDE_AX_PREPARK_MS
What

In screen-reader mode the terminal is no longer repainted the instant output changes. The cursor is parked and the redraw deferred by a short timer, so a burst of frames is announced once rather than many times. The delay is 50ms by default and settable with CLAUDE_AX_PREPARK_MS, capped at 5000ms.

Details
  • While the timer is outstanding, further screen-reader renders are skipped and coalesced into the pending redraw.
  • If the app is exiting the timer is cleared first so the final frame is written immediately; it is also cleared on unmount and whenever the render state is reset.
  • This sits on top of the existing startup-quiet delay, set by CLAUDE_AX_STARTUP_QUIET_MS, which is likewise clamped to a built-in maximum.
  • None of this runs outside screen-reader mode.
Evidence

CLAUDE_AX_PREPARK_MS, srPreParkTimer

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.233 →