Am Donnerstag, dem 07.11.2024 um 16:41 +0900 schrieb Yokota K.:
> Since \DocumentMetadata{…} needs to come in front of \documentclass
> declaration, LyX layout scheme probably need be updated.
No, we have an UI for it as of LyX 2.4:
Document > Settings > PDF Settings > Document Metadata.
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