From 9a4c87e398625d6bcc88254bf0b42fdd8269e838 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20Lov=C3=A9n?= <thomasloven@gmail.com>
Date: Wed, 21 Aug 2019 23:42:11 +0200
Subject: [PATCH] Documentation for home-assistant/home-assistant-polymer#3505
 (#10200)

* Documentation for home-assistant/home-assistant-polymer#3505

* Add raw tags
---
 source/_lovelace/markdown.markdown | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/source/_lovelace/markdown.markdown b/source/_lovelace/markdown.markdown
index e9ef40c5b76..f8aafc15067 100644
--- a/source/_lovelace/markdown.markdown
+++ b/source/_lovelace/markdown.markdown
@@ -46,3 +46,27 @@ content: >
 
   Starting with Home Assistant 0.72, we're experimenting with a new way of defining your interface. We're calling it the **Lovelace UI**.
 ```
+
+## Template variables
+
+A special template variable - `config` is set up for the `content` of the card. It contains the configuration of the card.
+
+E.g.
+{% raw %}
+```yaml
+type: entity-filter
+entities:
+  - light.bed_light
+  - light.ceiling_lights
+  - light.kitchen_lights
+card:
+  type: markdown
+  content: |
+    The lights that are on are:
+    {% for l in config.entities %}
+      - {{ l.entity }}
+    {%- endfor %}
+
+    And the door is {% if is_state('binary_sensor.door', 'on' %} open {% else %} closed {% endif %}.
+```
+{% endraw %}