2026-09-18 UTC
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[tantek] The W3C settled on US English spellings per https://www.w3.org/guide/manual-of-style/#Spelling «W3C uses U.S. English (e.g., "standardise" should read "standardize" and "colour" should read "color").» in case you wondered why all those terms in specs / web standards were in U.S. English.