14 lines
760 B
Markdown
14 lines
760 B
Markdown
# Interface language
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Choose **Edit > Preferences > Interface language** and select **English** or **日本語**. The change applies immediately and persists between launches. Command ids, document contents and file names are unchanged.
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The control channel exposes the setting through `ui.set`:
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```json
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{"method":"ui.set","params":{"key":"language","value":"ja"}}
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```
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`ui.state` reports `language` as `en` or `ja`. Unknown language codes return an error without changing the current setting. Old preferences default to English.
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This first translation pass covers the main menu and core registered menu commands. Untranslated labels use English. Vertical Japanese PDF rendering is an existing viewer feature; this change does not add vertical text editing.
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