diff --git a/library/i18n/locales/ar/vision.json b/library/i18n/locales/ar/vision.json
index b4fdf9308..6704b7993 100644
--- a/library/i18n/locales/ar/vision.json
+++ b/library/i18n/locales/ar/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "كل صف في بيانات IMB لمجموعات الشعوب: مجموعة شعب واحدة في بلد واحد.",
   "ruleUnreached": "أولوية الضياع لدى IMB من 0 إلى 2: أقل من 2% إنجيليون.",
   "ruleFrontier": "أولوية الضياع لدى IMB رقم 0: أقل من 0.1% إنجيليون. جزء من غير المُبشَّرة.",
-  "ruleDoxa": "كل مجموعة في قائمة صلاة DOXA، مطابَقة مع بيانات IMB حسب الشعب والبلد. ليست كلها حدودية."
+  "ruleDoxa": "كل مجموعة في قائمة صلاة DOXA، مطابَقة مع بيانات IMB حسب الشعب والبلد. ليست كلها حدودية.",
+  "about": "حول هذه الخريطة"
 }
diff --git a/library/i18n/locales/de/vision.json b/library/i18n/locales/de/vision.json
index 4d7b7cb57..c8d918468 100644
--- a/library/i18n/locales/de/vision.json
+++ b/library/i18n/locales/de/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "Jede Zeile der IMB-Volksgruppendaten: eine Volksgruppe in einem Land.",
   "ruleUnreached": "IMB-Lostness-Priorität 0 bis 2: weniger als 2 % Evangelikale.",
   "ruleFrontier": "IMB-Lostness-Priorität 0: weniger als 0,1 % Evangelikale. Eine Teilmenge der Unerreichten.",
-  "ruleDoxa": "Jede Gruppe auf der DOXA-Gebetsliste, den IMB-Daten nach Volk und Land zugeordnet. Nicht alle sind Frontier."
+  "ruleDoxa": "Jede Gruppe auf der DOXA-Gebetsliste, den IMB-Daten nach Volk und Land zugeordnet. Nicht alle sind Frontier.",
+  "about": "Über diese Karte"
 }
diff --git a/library/i18n/locales/en/vision.json b/library/i18n/locales/en/vision.json
index be10ef8ef..f2f4af718 100644
--- a/library/i18n/locales/en/vision.json
+++ b/library/i18n/locales/en/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "Every row of the IMB people-group data: one people group in one country.",
   "ruleUnreached": "IMB lostness priority 0 to 2: less than 2% evangelical.",
   "ruleFrontier": "IMB lostness priority 0: less than 0.1% evangelical. A subset of the unreached.",
-  "ruleDoxa": "Every group on the DOXA prayer list, matched to the IMB data by people and country. Not all are frontier."
+  "ruleDoxa": "Every group on the DOXA prayer list, matched to the IMB data by people and country. Not all are frontier.",
+  "about": "About this map"
 }
diff --git a/library/i18n/locales/es/vision.json b/library/i18n/locales/es/vision.json
index 9bd5e0ac0..abe5b208d 100644
--- a/library/i18n/locales/es/vision.json
+++ b/library/i18n/locales/es/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "Cada fila de los datos de grupos étnicos del IMB: un grupo étnico en un país.",
   "ruleUnreached": "Prioridad de perdición del IMB de 0 a 2: menos del 2 % evangélicos.",
   "ruleFrontier": "Prioridad de perdición del IMB 0: menos del 0,1 % evangélicos. Un subconjunto de los no alcanzados.",
-  "ruleDoxa": "Cada grupo de la lista de oración de DOXA, vinculado a los datos del IMB por pueblo y país. No todos son de frontera."
+  "ruleDoxa": "Cada grupo de la lista de oración de DOXA, vinculado a los datos del IMB por pueblo y país. No todos son de frontera.",
+  "about": "Acerca de este mapa"
 }
diff --git a/library/i18n/locales/fr/vision.json b/library/i18n/locales/fr/vision.json
index 78906723b..339d9a3de 100644
--- a/library/i18n/locales/fr/vision.json
+++ b/library/i18n/locales/fr/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "Chaque ligne des données IMB : un groupe ethnique dans un pays.",
   "ruleUnreached": "Priorité de perdition IMB 0 à 2 : moins de 2 % d’évangéliques.",
   "ruleFrontier": "Priorité de perdition IMB 0 : moins de 0,1 % d’évangéliques. Un sous-ensemble des non-atteints.",
-  "ruleDoxa": "Chaque groupe de la liste de prière DOXA, rapproché des données IMB par peuple et pays. Tous ne sont pas de frontière."
+  "ruleDoxa": "Chaque groupe de la liste de prière DOXA, rapproché des données IMB par peuple et pays. Tous ne sont pas de frontière.",
+  "about": "À propos de cette carte"
 }
diff --git a/library/i18n/locales/hi/vision.json b/library/i18n/locales/hi/vision.json
index fd1673dea..3cb4210bc 100644
--- a/library/i18n/locales/hi/vision.json
+++ b/library/i18n/locales/hi/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "IMB जनसमूह आँकड़ों की हर पंक्ति: एक देश में एक जनसमूह।",
   "ruleUnreached": "IMB लॉस्टनेस प्राथमिकता 0 से 2: 2% से कम इवेंजेलिकल।",
   "ruleFrontier": "IMB लॉस्टनेस प्राथमिकता 0: 0.1% से कम इवेंजेलिकल। अप्रचारितों का एक भाग।",
-  "ruleDoxa": "DOXA प्रार्थना सूची का हर समूह, जनसमूह और देश के आधार पर IMB आँकड़ों से मिलाया गया। सभी सीमांत नहीं हैं।"
+  "ruleDoxa": "DOXA प्रार्थना सूची का हर समूह, जनसमूह और देश के आधार पर IMB आँकड़ों से मिलाया गया। सभी सीमांत नहीं हैं।",
+  "about": "इस मानचित्र के बारे में"
 }
diff --git a/library/i18n/locales/it/vision.json b/library/i18n/locales/it/vision.json
index 15d1b4218..10c1f9466 100644
--- a/library/i18n/locales/it/vision.json
+++ b/library/i18n/locales/it/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "Ogni riga dei dati IMB sui gruppi etnici: un gruppo etnico in un paese.",
   "ruleUnreached": "Priorità di perdizione IMB da 0 a 2: meno del 2% evangelici.",
   "ruleFrontier": "Priorità di perdizione IMB 0: meno dello 0,1% evangelici. Un sottoinsieme dei non raggiunti.",
-  "ruleDoxa": "Ogni gruppo dell’elenco di preghiera DOXA, abbinato ai dati IMB per popolo e paese. Non tutti sono di frontiera."
+  "ruleDoxa": "Ogni gruppo dell’elenco di preghiera DOXA, abbinato ai dati IMB per popolo e paese. Non tutti sono di frontiera.",
+  "about": "Informazioni su questa mappa"
 }
diff --git a/library/i18n/locales/pt/vision.json b/library/i18n/locales/pt/vision.json
index 2e77f751f..1310e7f8a 100644
--- a/library/i18n/locales/pt/vision.json
+++ b/library/i18n/locales/pt/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "Cada linha dos dados de grupos étnicos do IMB: um grupo étnico em um país.",
   "ruleUnreached": "Prioridade de perdição do IMB de 0 a 2: menos de 2% evangélicos.",
   "ruleFrontier": "Prioridade de perdição do IMB 0: menos de 0,1% evangélicos. Um subconjunto dos não alcançados.",
-  "ruleDoxa": "Cada grupo da lista de oração da DOXA, associado aos dados do IMB por povo e país. Nem todos são de fronteira."
+  "ruleDoxa": "Cada grupo da lista de oração da DOXA, associado aos dados do IMB por povo e país. Nem todos são de fronteira.",
+  "about": "Sobre este mapa"
 }
diff --git a/library/i18n/locales/ro/vision.json b/library/i18n/locales/ro/vision.json
index 32f943a32..2bc83547e 100644
--- a/library/i18n/locales/ro/vision.json
+++ b/library/i18n/locales/ro/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "Fiecare rând din datele IMB despre grupuri etnice: un grup etnic într-o țară.",
   "ruleUnreached": "Prioritatea de pierzare IMB 0–2: sub 2% evanghelici.",
   "ruleFrontier": "Prioritatea de pierzare IMB 0: sub 0,1% evanghelici. O submulțime a celor neatinse.",
-  "ruleDoxa": "Fiecare grup de pe lista de rugăciune DOXA, potrivit cu datele IMB după popor și țară. Nu toate sunt de frontieră."
+  "ruleDoxa": "Fiecare grup de pe lista de rugăciune DOXA, potrivit cu datele IMB după popor și țară. Nu toate sunt de frontieră.",
+  "about": "Despre această hartă"
 }
diff --git a/library/i18n/locales/ru/vision.json b/library/i18n/locales/ru/vision.json
index 981cb75cc..196589220 100644
--- a/library/i18n/locales/ru/vision.json
+++ b/library/i18n/locales/ru/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "Каждая строка данных IMB о народах: один народ в одной стране.",
   "ruleUnreached": "Приоритет IMB 0–2: менее 2% евангельских христиан.",
   "ruleFrontier": "Приоритет IMB 0: менее 0,1% евангельских христиан. Часть недостигнутых.",
-  "ruleDoxa": "Каждая группа из молитвенного списка DOXA, сопоставленная с данными IMB по народу и стране. Не все из них рубежные."
+  "ruleDoxa": "Каждая группа из молитвенного списка DOXA, сопоставленная с данными IMB по народу и стране. Не все из них рубежные.",
+  "about": "Об этой карте"
 }
diff --git a/library/i18n/locales/zh/vision.json b/library/i18n/locales/zh/vision.json
index 8b5139466..a665be998 100644
--- a/library/i18n/locales/zh/vision.json
+++ b/library/i18n/locales/zh/vision.json
@@ -17,5 +17,6 @@
   "ruleAll": "IMB 族群数据的每一行：一个国家中的一个族群。",
   "ruleUnreached": "IMB 迷失优先级 0 至 2：福音派信徒少于 2%。",
   "ruleFrontier": "IMB 迷失优先级 0：福音派信徒少于 0.1%。属于未得之民的一部分。",
-  "ruleDoxa": "DOXA 祷告名单上的每个族群，按民族和国家与 IMB 数据匹配。并非全部都是前沿族群。"
+  "ruleDoxa": "DOXA 祷告名单上的每个族群，按民族和国家与 IMB 数据匹配。并非全部都是前沿族群。",
+  "about": "关于此地图"
 }
diff --git a/plugin-designs/all-people-groups/all-people-groups.vue b/plugin-designs/all-people-groups/all-people-groups.vue
index 2cfcfda7e..29b49fc21 100644
--- a/plugin-designs/all-people-groups/all-people-groups.vue
+++ b/plugin-designs/all-people-groups/all-people-groups.vue
@@ -39,6 +39,7 @@ import { useShadowStyles }    from '@map/composables/useShadowStyles.js'
 import { DataSourceManager }  from '@map/utils/DataSourceManager.js'
 import MapToolbar             from '@map/components/map-controls/MapToolbar.vue'
 import ShareButton            from '@map/components/map-controls/ShareButton.vue'
+import HelpButton             from '@map/components/map-controls/HelpButton.vue'
 import { resolveAssetsBase }  from '@map/utils/embedBase.js'
 
 useShadowStyles(`
@@ -448,6 +449,7 @@ const totalShown = computed(() =>
          top offset collapses to the desktop 10px instead of reserving space for one. -->
     <MapToolbar :has-geocoder="false">
       <ShareButton :is-dark="isDark" :embed-path="SHARE_EMBED_PATH" />
+      <HelpButton :is-dark="isDark" hosted />
     </MapToolbar>
 
     <div v-if="appReady" class="apg-legend">
diff --git a/plugin-designs/country-posters/countries-map.vue b/plugin-designs/country-posters/countries-map.vue
index 9672b45ac..d4bf4ce10 100644
--- a/plugin-designs/country-posters/countries-map.vue
+++ b/plugin-designs/country-posters/countries-map.vue
@@ -137,6 +137,7 @@ import LocationButton    from '@map/components/map-controls/LocationButton.vue'
 import FullscreenButton  from '@map/components/map-controls/FullscreenButton.vue'
 import ThemeToggleButton from '@map/components/map-controls/ThemeToggleButton.vue'
 import HamburgerButton   from '@map/components/map-controls/HamburgerButton.vue'
+import HelpButton        from '@map/components/map-controls/HelpButton.vue'
 import GeocoderComponent from '@map/components/map-controls/GeocoderComponent.vue'
 import { resolveMapProvider, setProjectionOn } from '@map/composables/useMapProvider.js'
 import ShareButton       from '@map/components/map-controls/ShareButton.vue'
@@ -2294,6 +2295,7 @@ onBeforeUnmount(() => {
         <LocationButton    :map="map"          :is-dark="isDark" />
         <FullscreenButton  :map-container="mapContainer" :is-dark="isDark" />
         <ThemeToggleButton :is-dark="isDark"    @toggle="handleToggleTheme" />
+        <HelpButton        :is-dark="isDark" hosted />
         <!-- EXPORT, ALWAYS VISIBLE (KNOWN-BUGS NE-17). "Export poster…" lived only in the side drawer,
              whose opener is off by default (hamburgerMenu:false), so no reader could reach it; the
              legend's Export menu needs a row selected first. This is the same one-click toolbar control
diff --git a/plugin-designs/doxa-vision-card/doxa-vision-card.vue b/plugin-designs/doxa-vision-card/doxa-vision-card.vue
index ae9a03027..82cf6296c 100644
--- a/plugin-designs/doxa-vision-card/doxa-vision-card.vue
+++ b/plugin-designs/doxa-vision-card/doxa-vision-card.vue
@@ -25,6 +25,7 @@
  * reads `profile-config` for optional overrides: title, tagline, accent, locale.
  */
 import { computed } from 'vue'
+import { useHostedHelp } from '@map/composables/useHostedHelp.js'
 import FUNNEL from '../../data/people-groups/vision-funnel.json'
 
 // Every locale's strings, compiled in (library/i18n/locales/<lc>/vision.json, held to key parity by
@@ -67,6 +68,8 @@ const people = (n) => new Intl.NumberFormat(locale.value, { notation: 'compact',
 const date = (iso) => { try { return new Intl.DateTimeFormat(locale.value, { year: 'numeric', month: 'long', day: 'numeric' }).format(new Date(iso + 'T00:00:00Z')) } catch { return iso } }
 
 const accent = computed(() => config.value.accent || '#92b195')
+// The card's "?" asks its HOST for this map's help (doxa:help); it shows only where a host answers.
+const { hosted: helpHosted, askForHelp } = useHostedHelp()
 const heading = computed(() => config.value.title || t('title'))
 const tagline = computed(() => config.value.tagline || t('tagline'))
 
@@ -89,6 +92,8 @@ const sources = computed(() => t('sources', {
 <template>
   <div class="vc-root" :dir="dir" :lang="locale" :style="{ '--accent': accent }">
     <article class="vc-card">
+      <button v-if="helpHosted" type="button" class="vc-help" :aria-label="t('about')" :title="t('about')"
+              @click="askForHelp($event.currentTarget)">?</button>
       <div class="vc-kicker"><span class="vc-mark" aria-hidden="true"></span>{{ t('kicker') }}</div>
       <h1 class="vc-title">{{ heading }}</h1>
       <p class="vc-tagline">{{ tagline }}</p>
@@ -130,6 +135,7 @@ const sources = computed(() => t('sources', {
   -webkit-font-smoothing: antialiased;
 }
 .vc-card {
+  position: relative;
   width: 100%; max-width: 640px; box-sizing: border-box;
   background: #fff; border: 1px solid #d1d4cd; border-radius: 16px;
   box-shadow: 0 1px 2px rgba(59,70,61,.06), 0 8px 24px -12px rgba(59,70,61,.18);
@@ -140,6 +146,12 @@ const sources = computed(() => t('sources', {
   font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: #6d766e;
 }
 .vc-mark { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
+/* The card's "?": top corner at the END of the reading direction, so Arabic mirrors it. */
+.vc-help {
+  position: absolute; top: 14px; inset-inline-end: 14px; width: 28px; height: 28px; border-radius: 50%;
+  border: 1px solid #d1d4cd; background: #fff; color: #3b463d; font: 700 15px/1 Georgia, serif; cursor: pointer;
+}
+.vc-help:focus-visible { outline: 2px solid #3f8f5a; outline-offset: 2px; }
 .vc-title { margin: 10px 0 6px; font-size: clamp(22px, 4.2vw, 30px); line-height: 1.15; font-weight: 800; color: #3b463d; }
 .vc-tagline { margin: 0 0 22px; font-size: 15px; line-height: 1.5; color: #6d766e; }
 
diff --git a/plugin-designs/gospel-internet/src/components/GiMap.vue b/plugin-designs/gospel-internet/src/components/GiMap.vue
index 82937e35e..8b1ead1cb 100644
--- a/plugin-designs/gospel-internet/src/components/GiMap.vue
+++ b/plugin-designs/gospel-internet/src/components/GiMap.vue
@@ -34,6 +34,7 @@ import MapToolbar from '@map/components/map-controls/MapToolbar.vue'
 import ZoomInButton from '@map/components/map-controls/ZoomInButton.vue'
 import ZoomOutButton from '@map/components/map-controls/ZoomOutButton.vue'
 import ShareButton from '@map/components/map-controls/ShareButton.vue'
+import HelpButton from '@map/components/map-controls/HelpButton.vue'
 import { useBoardState, EMBED_PATH } from '../useBoard.js'
 import { useGiT } from '../useGiT.js'
 import { createBoardMap, reducedMotion } from '../boardEngine.js'
@@ -378,6 +379,7 @@ useShadowStyles(
       <ZoomInButton :map="mapRef" />
       <ZoomOutButton :map="mapRef" />
       <ShareButton :embed-path="EMBED_PATH" />
+      <HelpButton hosted />
     </MapToolbar>
 
     <div v-if="legendOpen" class="gim-legend">
diff --git a/plugin-designs/gospel-internet/src/components/GiTree.vue b/plugin-designs/gospel-internet/src/components/GiTree.vue
index e1d48b053..955efd3c1 100644
--- a/plugin-designs/gospel-internet/src/components/GiTree.vue
+++ b/plugin-designs/gospel-internet/src/components/GiTree.vue
@@ -32,6 +32,7 @@ import { labelFont } from '@map/maps/label-font.js'
 import MapToolbar from '@map/components/map-controls/MapToolbar.vue'
 import ZoomInButton from '@map/components/map-controls/ZoomInButton.vue'
 import ZoomOutButton from '@map/components/map-controls/ZoomOutButton.vue'
+import HelpButton from '@map/components/map-controls/HelpButton.vue'
 import { useBoardState } from '../useBoard.js'
 import { useGiT } from '../useGiT.js'
 import { createBoardMap, reducedMotion } from '../boardEngine.js'
@@ -367,6 +368,7 @@ useShadowStyles(
     <MapToolbar v-if="mapRef">
       <ZoomInButton :map="mapRef" />
       <ZoomOutButton :map="mapRef" />
+      <HelpButton hosted />
     </MapToolbar>
 
     <div v-if="card" class="gtr-card" data-tree-card>
diff --git a/plugin-designs/pplr-data-maps/pplr-data-maps.vue b/plugin-designs/pplr-data-maps/pplr-data-maps.vue
index 609ad5263..c0cf78b8e 100644
--- a/plugin-designs/pplr-data-maps/pplr-data-maps.vue
+++ b/plugin-designs/pplr-data-maps/pplr-data-maps.vue
@@ -24,6 +24,8 @@ import { useShadowStyles } from '@map/composables/useShadowStyles.js'
 import { resolveAssetsBase } from '@map/utils/embedBase.js'
 import { setDataBase, ensureD3 } from './src/utils/pplrData.js'
 import { usePplrT } from './src/composables/usePplrT.js'
+import { useHostedHelp } from '@map/composables/useHostedHelp.js'
+import { useOptionalT } from '@map/composables/useOptionalT.js'
 
 const profileConfig = inject('profileConfig')
 const cfg = computed(() => profileConfig?.value || {})
@@ -32,6 +34,9 @@ setDataBase(resolveAssetsBase(cfg.value))
 // Order and labels follow the original showcase page's tab bar.
 // Tab labels are the chrome a reader sees first; they come from pplr.json (all 11 locales).
 const t = usePplrT()
+// The hub's "?" asks its HOST for this map's help (doxa:help); it shows only where a host answers.
+const { hosted: helpHosted, askForHelp } = useHostedHelp()
+const tb = useOptionalT('buttons')
 const VIEWS = [
   { key: 'pplr-religion',          label: 'Religion', tKey: 'pplr.tabs.religion',                  load: () => import('./src/views/pplr-religion.vue') },
   { key: 'pplr-rop-tree',          label: 'ROP Tree', tKey: 'pplr.tabs.ropTree',                  load: () => import('./src/views/pplr-rop-tree.vue') },
@@ -65,6 +70,9 @@ useShadowStyles(
   'border-bottom:1px solid #d1d4cd;overflow-x:auto;z-index:50}' +
   '.pdm-brand{font:700 12px/1 ui-monospace,monospace;letter-spacing:.06em;text-transform:uppercase;color:#3b463d;white-space:nowrap}' +
   '.pdm-seg{display:inline-flex;gap:4px;flex-wrap:nowrap}' +
+  '.pdm-help{margin-inline-start:auto;width:28px;height:28px;border-radius:50%;border:1px solid #d1d4cd;background:#fff;' +
+  'color:#3b463d;font:700 15px/1 Georgia,serif;cursor:pointer;flex:0 0 auto}' +
+  '.pdm-help:focus-visible{outline:2px solid #3f8f5a;outline-offset:2px}' +
   '.pdm-seg button{border:1px solid #d1d4cd;background:#fff;color:#3b463d;cursor:pointer;white-space:nowrap;' +
   'font:600 12px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;padding:7px 11px;border-radius:999px}' +
   '.pdm-seg button.on{background:#92b195;border-color:#92b195;color:#fff}' +
@@ -81,6 +89,8 @@ useShadowStyles(
         <button v-for="v in VIEWS" :key="v.key" role="tab" :aria-selected="view === v.key"
                 :class="{ on: view === v.key }" @click="setView(v.key)">{{ t(v.tKey) }}</button>
       </div>
+      <button v-if="helpHosted" type="button" class="pdm-help" :aria-label="tb('aboutThisMap')" :title="tb('aboutThisMap')"
+              @click="askForHelp($event.currentTarget)">?</button>
     </div>
     <div class="pdm-stage">
       <component :is="COMPONENTS[view]" :key="view" />
diff --git a/plugin-designs/prayer-walk-planner/prayer-walk-planner.vue b/plugin-designs/prayer-walk-planner/prayer-walk-planner.vue
index b58c201b8..87f0ac22e 100644
--- a/plugin-designs/prayer-walk-planner/prayer-walk-planner.vue
+++ b/plugin-designs/prayer-walk-planner/prayer-walk-planner.vue
@@ -54,6 +54,7 @@ import { useShadowStyles } from '@map/composables/useShadowStyles.js'
 import { openPrintFrame } from '@map/composables/printInPlace.js'
 import ShareButton from '@map/components/map-controls/ShareButton.vue'
 import FullscreenButton from '@map/components/map-controls/FullscreenButton.vue'
+import HelpButton from '@map/components/map-controls/HelpButton.vue'
 import { resolveNamedStyle } from '@map/styles/registry.js'
 import { ensureRtlTextPlugin } from '@map/maps/rtl-text.js'
 import { localizeBasemapLabels } from '@map/maps/localize-labels.js'
@@ -641,7 +642,7 @@ useShadowStyles(
   '.pwp-body{position:relative;flex:1;min-height:0;display:flex}' +
   '.pwp-map{position:relative;flex:1;min-width:0}' +
   '.pwp-map-el{position:absolute;inset:0}' +
-  '.pwp-map-controls{position:absolute;top:10px;right:10px;z-index:4}' +
+  '.pwp-map-controls{position:absolute;top:10px;right:10px;z-index:4;display:flex;flex-direction:column;gap:8px}' +
   '.pwp[dir=rtl] .pwp-map-controls{right:auto;left:10px}' +
   '.pwp-list{width:260px;flex-shrink:0;overflow-y:auto;background:#fff;border-left:1px solid #d1d4cd;padding:8px}' +
   '.pwp-list-empty{padding:16px 10px;font-size:12px;color:#6d766e}' +
@@ -732,7 +733,8 @@ useShadowStyles(
              FullscreenButton requests fullscreen on this element's custom-element host, and falls
              back to a CSS pseudo-fullscreen where the API does not exist (iOS Safari). A planner
              embedded in a partner page or the gallery can take the whole screen for drawing. -->
-        <div class="pwp-map-controls"><FullscreenButton :map-container="mapContainer" /></div>
+        <!-- The "?" asks the host for this map's help (doxa:help); it shows only where a host answers. -->
+        <div class="pwp-map-controls"><FullscreenButton :map-container="mapContainer" /><HelpButton hosted /></div>
       </div>
       <div class="pwp-list">
         <div v-if="polygons.length === 0" class="pwp-list-empty">
diff --git a/plugin-designs/wall-of-people-groups/src/components/PeopleGroupsWall.vue b/plugin-designs/wall-of-people-groups/src/components/PeopleGroupsWall.vue
index bb35da292..f0fd54006 100644
--- a/plugin-designs/wall-of-people-groups/src/components/PeopleGroupsWall.vue
+++ b/plugin-designs/wall-of-people-groups/src/components/PeopleGroupsWall.vue
@@ -24,6 +24,8 @@
                         <button type="button" class="control-btn" :class="{ on: mode === 'bless' }" :aria-pressed="mode === 'bless' ? 'true' : 'false'" @click="setMode('bless')">{{ $t('wall.modeBless') }}</button>
                         <button type="button" class="control-btn" :class="{ on: mode === 'social' }" :aria-pressed="mode === 'social' ? 'true' : 'false'" @click="setMode('social')">{{ $t('wall.modeSocial') }}</button>
                     </div>
+                    <button v-if="helpHosted" type="button" class="control-btn wall-help" :aria-label="$t('buttons.aboutThisMap')"
+                            :title="$t('buttons.aboutThisMap')" @click="askForHelp($event.currentTarget)">?</button>
                     <span class="group-count">{{ $t('wall.groupsLoaded', { n: totalGroups }) }}</span>
                 </div>
             </div>
@@ -52,11 +54,17 @@
 import { WallCanvas, groupLink } from '../wallCanvas.js'
 import { buildBlessPosterHtml, screenPoster, PRESETS, DEFAULT_PRESET } from '../blessPoster.js'
 import { openPrintFrame } from '@map/composables/printInPlace.js'
+import { useHostedHelp } from '@map/composables/useHostedHelp.js'
 // Wall of People Groups: a zoomable canvas wall (wallCanvas.js), Bless or Social cards, and the poster print.
 export default {
     name: 'PeopleGroupsWall',
     // The page's profile-config, for its people-group LIST (library/lists/); handed to the store.
     inject: { profileConfig: { default: null } },
+    // The wall's "?" asks its HOST for the wall's help (doxa:help); it shows only where a host answers.
+    setup() {
+        const { hosted, askForHelp } = useHostedHelp()
+        return { helpHosted: hosted, askForHelp }
+    },
     data() {
         return {
             mode: 'bless',     // 'bless' (default) | 'social'
diff --git a/plugin-designs/wall-of-people-groups/src/wall.css b/plugin-designs/wall-of-people-groups/src/wall.css
index 83eff7d01..5dcb7d127 100644
--- a/plugin-designs/wall-of-people-groups/src/wall.css
+++ b/plugin-designs/wall-of-people-groups/src/wall.css
@@ -91,6 +91,8 @@ body {
 .mode-toggle .control-btn { border-radius: 0; }
 .mode-toggle .control-btn:first-child { border-start-start-radius: 6px; border-end-start-radius: 6px; }
 .mode-toggle .control-btn:last-child { border-start-end-radius: 6px; border-end-end-radius: 6px; }
+/* The wall's "?": the same control as its neighbours, a serif glyph like the map controls' "?". */
+.wall-help { font-family: Georgia, serif; font-weight: 700; min-width: 32px; }
 .mode-toggle .control-btn.on { background: #262626; color: #fff; }
 .control-btn:hover {
     background: #0081d6;