diff --git a/elements/cloud-init-datasources/README.rst b/elements/cloud-init-datasources/README.rst
index 0849cb6c..375f4278 100644
--- a/elements/cloud-init-datasources/README.rst
+++ b/elements/cloud-init-datasources/README.rst
@@ -1,6 +1,7 @@
 ======================
 cloud-init-datasources
 ======================
+
 Configures cloud-init to only use an explicit list of data sources.
 
 Cloud-init contains a growing collection of data source modules and most
@@ -8,17 +9,19 @@ are enabled by default.  This causes cloud-init to query each data source
 on first boot.  This can cause delays or even boot problems depending on your
 environment.
 
-You must define `DIB_CLOUD_INIT_DATASOURCES` as a comma-separated list of valid
-data sources to limit the data sources that will be queried for metadata on
-first boot.
-
-For instance, to enable only the Ec2 datasource:
-
-    export `DIB_CLOUD_INIT_DATASOURCES`="Ec2"
-
-Or to enable multiple:
-
-    export `DIB_CLOUD_INIT_DATASOURCES`="Ec2, ConfigDrive, OpenStack"
-
 Including this element without setting `DIB_CLOUD_INIT_DATASOURCES` will cause
 image builds to fail.
+
+Environment Variables
+---------------------
+
+DIB_CLOUD_INIT_DATASOURCES
+  :Required: Yes
+  :Default: None
+  :Description: A comma-separated list of valid data sources to limit the data
+    sources that will be queried for metadata on first boot.
+  :Example: ``DIB_CLOUD_INIT_DATASOURCES="Ec2"`` will enable only the Ec2 data
+    source.
+  :Example: ``DIB_CLOUD_INIT_DATASOURCES="Ec2, ConfigDrive, OpenStack"`` will
+    enable the Ec2, ConfigDrive and OpenStack data sources.
+