Updates and service status

Maintenance announcements

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Checks read this site’s build information and account module resource availability. They do not sign in, send codes or establish availability in every region. No recovery time is inferred when none has been announced.

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Change history

Feature notes

• Settings include site-wide dark/light themes, text size and reduced motion. Local study tools support notes, bookmarks, personal routes, history and backup.
• Map tools include stage filters, focused relations, a minimap, exact zoom and read-only view sharing. Images and study lists can be exported.
• Bilingual self-tests, real-data practice, English-source reading aids and common questions are available.

2026-10-31 · Previous release c3a497a6222b

Fixed full-text index compatibility and improved mobile maps, view restoration, help, privacy prompts and account-request timeouts. Real accounts, cross-device sync and mainland-network verification remain separate checks.

Content age

Research papers retain their publication year. For software and external resources, consult the original version, update date and license. This site’s check date is neither a paper’s publication date nor a certification of every claim.

Content plans

The software tutorial structure has six modules: five have tutorials; “Other brands and tasks” remains planned. Planned additions cover task-based tool comparisons, input/output examples and validation, with no promised publication date. The data lab is separate and does not mark module six complete.

Chinese and English take priority; other languages are deferred. A learning discussion area is skipped this round.