diff --git a/redstring/server.py b/redstring/server.py
index f4f9513..f6dad93 100644
--- a/redstring/server.py
+++ b/redstring/server.py
@@ -6,6 +6,7 @@ import json
 import logging
 import os
 import random
+import re
 import string
 
 from flask import (
@@ -44,6 +45,14 @@ def inject_edit():
     return {'edit': current_app.config['edit']}
 
 
+@app.template_filter('interlink')
+def interlink_filter(value):
+    return re.sub(
+        r'\[\[([^|]+)\|([^|]+)\]\]',
+        lambda match: f'<a href="{match[2]}">{match[1]}</a>',
+        value)
+
+
 @app.route('/', methods=['GET'])
 def root():
     return redirect(url_for('index'))
diff --git a/redstring/templates/doc.jinja b/redstring/templates/doc.jinja
index f2d8801..b7549d4 100644
--- a/redstring/templates/doc.jinja
+++ b/redstring/templates/doc.jinja
@@ -63,10 +63,11 @@ window.onload = function () {
 </div>
 {% endmacro %}
 
-{# TODO: tag.interlink #}
 {% macro make_tag_value(tag) -%}
 {%- if tag.options.hyperlink -%}
 <a href="{{ tag.value }}">{{ tag.value }}</a>
+{%- elif tag.options.interlink -%}
+{{ tag.value|interlink }}
 {%- else -%}
 {{ tag.value }}
 {%- endif -%}