Source registry · reviewed 2026-08-25

What the flagship knowledge pages rely on

Direct answer. This registry names the sources currently used by published flagship knowledge and design-method pages, labels what kind of source each one is and states what it cannot prove. An official source is not an endorsement; an external ruleset is not universal household practice.

The machine-readable record is public JSON. Sources currently used by published flagship knowledge and design-method pages. This is not a comprehensive bibliography.

WHW-SRC-SGMJ-GUIDE

WongHongWei.com Singapore Mahjong Guide

Publisher: Wong Hong Wei · Kind: first-party-documentation · Checked: 2026-08-25

Used by: singapore-mahjong, singapore-mahjong-ping-hu

Boundary: Documents this site's practice rules and clearly labelled alternatives; it is not a universal Singapore rules authority.

WHW-SRC-SGMJ-ENGINE

WongHongWei.com Singapore Mahjong practice table and scorer

Publisher: Wong Hong Wei · Kind: first-party-implementation · Checked: 2026-08-25

Used by: singapore-mahjong-ping-hu

Boundary: Implementation evidence for this site's ruleset, not evidence that every household uses the same rules.

WHW-SRC-SGMJ-COMMUNITY-RULES

SingaporeMahjong.com rules

Publisher: SingaporeMahjong.com · Kind: external-ruleset · Checked: 2026-08-25

Used by: singapore-mahjong-ping-hu

Boundary: A published comparison ruleset, not an official or exhaustive description of Singapore household practice.

WHW-SRC-ECDA-EYDF-2023

ECDA Educators' Portal: Early Years Development Framework and guides

Publisher: Singapore Early Childhood Development Agency · Kind: official-guidance · Checked: 2026-08-25

Used by: foxys-learning-patch, foxy-screen-light-standard

Boundary: Used to describe broad design intent only. Foxy is not accredited, endorsed or reviewed by ECDA.

WHW-SRC-HEALTHHUB-SCREEN-TIME

Parent Hub: screen-time guidance for babies and toddlers

Publisher: HealthHub Singapore · Kind: official-health-guidance · Checked: 2026-08-25

Used by: foxy-screen-light-standard

Boundary: Context for a screen-light design commitment, not medical advice or evidence of developmental benefit.

How sources are handled

  1. Keep a stable source ID and publisher.
  2. Record the page or product that uses it.
  3. Publish a claim boundary rather than relying on the link as a trust badge.
  4. Re-check dated or moving material before a factual update.
  5. Record a material correction publicly.