Mark all legacy SVG1 writing-mode values as deprecated

[davidpavlovschi]

Description

Add {{Deprecated_Inline}} to the lr, lr-tb, rl, tb, and tb-rl value terms in the Values list of the writing-mode CSS property page, so all six legacy SVG1 values carry the deprecation icon instead of only tb-lr.

Motivation

All six of these values are described in the page's own prose as "Deprecated except for SVG1 documents", but only tb-lr rendered the deprecation icon. Readers scanning the value list saw five of them as if they were current CSS values. This makes the badge consistent with the prose that was already there, so a reader can tell at a glance which values not to use in CSS.

Additional details

• CSS Writing Modes Level 4 describes these SVG1.1 values as "obsolete in any context except SVG1 documents and are therefore optional for non-SVG UAs": https://drafts.csswg.org/css-writing-modes-4/#svg-writing-mode
• Only the value terms changed; no prose, no syntax block, no other page.
• The SVG writing-mode attribute page (files/en-us/web/svg/reference/attribute/writing-mode/index.md) does not duplicate this value list (it documents only horizontal-tb, vertical-rl, vertical-lr), so it needs no change.
• Checked locally on the touched file: markdownlint-cli2 (0 issues), prettier -c (passes), cspell (0 issues), scripts/front-matter_linter.js (0 errors, 0 warnings). The repo's lefthook pre-commit hook also ran green on commit.

Related issues and pull requests

Fixes #43929

[github-actions]

Preview URLs (1 page)

• /en-US/docs/Web/CSS/Reference/Properties/writing-mode

(comment last updated: 2026-07-31 10:03:24)

[estelle]

Thank you. Also, congratulations on your first merged MDN content PR. Welcome to he team!

[davidpavlovschi]

Thanks for the review and the warm welcome, @estelle!