improvement: FDI chart tool selection modes updated. shift+ and crtl+ both are assigned with a selection mode.

frontend/messages/en.json

@@ -809,7 +809,7 @@
     "entryStepNext": "Next",
     "entryStepLabUnavailable": "Lab dispatch is available after you save a lab-dependent detail with teeth selected.",
     "toothChartTitleCompact": "Tooth chart",
-    "toothChartHint": "Tap teeth to select. Shift-click another tooth in the same arch to select a connected span.",
+    "toothChartHint": "Tap teeth to select. Shift-click another tooth in the same arch for a connected span. Ctrl-click (⌘ on Mac) the same way to select each tooth separately.",
     "toothConnectedHint": "Connected selection",
     "toothConnectedSuffix": " (connected)",
     "connectedBadge": "Connected",

frontend/messages/fa.json

@@ -803,7 +803,7 @@
     "confirmSend": "تأیید ارسال",
     "toothChartTitle": "نمودار دندان‌ها FDI",
     "toothChartTitleCompact": "نمودار دندان",
-    "toothChartHint": "برای انتخاب روی دندان ضربه بزنید. Shift+کلیک روی دندان دیگر در همان قوس، یک بازه متصل می‌سازد.",
+    "toothChartHint": "برای انتخاب روی دندان ضربه بزنید. Shift+کلیک روی دندان دیگر در همان قوس، یک بازه متصل می‌سازد. Ctrl+کلیک (⌘ در مک) به همان شکل هر دندان را جداگانه انتخاب می‌کند.",
     "toothConnectedHint": "انتخاب متصل",
     "toothConnectedSuffix": " (متصل)",
     "connectedBadge": "متصل",

frontend/messages/nl.json

@@ -802,7 +802,7 @@
     "confirmSend": "Bevestig verzending",
     "toothChartTitle": "FDI-tanddiagram",
     "toothChartTitleCompact": "Tanddiagram",
-    "toothChartHint": "Tik op tanden om te selecteren. Shift-klik op een andere tand in dezelfde boog voor een verbonden span.",
+    "toothChartHint": "Tik op tanden om te selecteren. Shift-klik op een andere tand in dezelfde boog voor een verbonden span. Ctrl-klik (⌘ op Mac) op dezelfde manier om elke tand apart te selecteren.",
     "toothConnectedHint": "Verbonden selectie",
     "toothConnectedSuffix": " (verbonden)",
     "connectedBadge": "Verbonden",