{"name":"CLAUDE_AX_PREPARK_MS","slug":"claude-ax-prepark-ms","family":"env","title":"Environment variables","noun":"environment variable","description":"In [screen reader mode](\/docs\/en\/accessibility#what-your-screen-reader-hears), how many milliseconds Claude Code waits, with the cursor at the start of the line, before it writes a new or changed line. Default `50`. Set `0` to write immediately. Claude Code caps the wait at `5000`. Requires Claude Code v2.1.233 or later","description_source":"docs","described_by":{"doc":"claude-code\/env-vars","title":"Environment variables"},"presence":{"first_seen":"2.1.233","removed_in":null,"in_current_build":true,"newest_mined":"2.1.308","builds":65,"mined_builds":149,"first_cited":{"version":"2.1.233","released_at":"2026-08-14 18:50:44","spans":1}},"aliases":[],"entries":[{"version":"2.1.233","anchor":"screen-reader-mode-pauses-before-redrawing","heading":"Screen-reader mode pauses before redrawing","line":"Screen-reader mode waits briefly before redrawing so bursts are announced once; tune the delay with an env var.","released_at":"2026-08-14 18:50:44","reason":"named in this entry, found in this entry's text"}],"entries_total":1,"docs":[{"source":"claude-code","path":"env-vars","title":"Environment variables","documented":true},{"source":"claude-code","path":"accessibility","title":"Use Claude Code with a screen reader","documented":false},{"source":"claude-code","path":"changelog","title":"Claude Code changelog","documented":false}],"docs_total":3,"gates":[],"related":[{"name":"CLAUDE_AX_ANNOUNCEMENT_HOLD_MS","slug":"claude-ax-announcement-hold-ms","description":"Two environment variables control holding screen-reader announcements, for up to 10 seconds, and rewriting held ones, which is off by default"},{"name":"CLAUDE_AX_REWRITE_HELD_ANNOUNCEMENT","slug":"claude-ax-rewrite-held-announcement","description":"Two environment variables control holding screen-reader announcements, for up to 10 seconds, and rewriting held ones, which is off by default"},{"name":"CLAUDE_AX_SCREEN_READER","slug":"claude-ax-screen-reader","description":"Set to `1` to render screen-reader friendly output: flat text without decorative borders or animations. Set to `0` to force screen-reader mode off even when [`axScreenReader`](\/docs\/en\/settings-reference#axscreenreader) is `true`. The [`--ax-screen-reader`](\/docs\/en\/cli-reference#cli-flags) flag takes precedence. Requires Claude Code v2.1.181 or later"},{"name":"CLAUDE_AX_STARTUP_QUIET_MS","slug":"claude-ax-startup-quiet-ms","description":"In [screen reader mode](\/docs\/en\/accessibility), how many milliseconds Claude Code holds the first interface render after the startup confirmation line, so your screen reader can speak the line in full before new output interrupts it. Default `3000`. Set `0` to render immediately. Claude Code caps the hold at `600000` (10 minutes). Your first keystroke ends the hold early. Requires Claude Code v2.1.217 or later"}],"url":"https:\/\/changelogs.core-directive.com\/reference\/env\/claude-ax-prepark-ms","family_url":"https:\/\/changelogs.core-directive.com\/reference\/env.json"}