Example

data.json

@@ -0,0 +1,10 @@
+{
+	"01 Foo": {
+		"01 Egg": "http://egg",
+		"02 Ham": "http://ham"
+	},
+	"02 Bar": {
+		"01 Spam": "http://spam",
+		"02 Drum": "http://drum"
+	}
+}

template.html

@@ -0,0 +1,10 @@
+{{ range $section, $content := .Site.Data.data }}
+{{ $title := substr $section 3 }}
+<span class="title">{{ $title }}</span>
+<ul>
+    {{ range $link_name, $link_href := $content -}}
+    {{ $link_name := substr $link_name 3 -}}
+    <li><a href="{{ $link_href }}">{{ $link_name }}</a></li>
+    {{ end }}
+</ul>
+{{ end }}