diff --git a/Makefile b/Makefile
index e650882e..272ccc76 100644
--- a/Makefile
+++ b/Makefile
@@ -12,6 +12,7 @@ clean:
 		build/ \
 		dist/ \
 		src/ytdl_sub.egg-info/ \
+		docs/_html/ \
 		.coverage \
 		coverage.xml
 
diff --git a/docs/config.rst b/docs/config.rst
index d04837fa..a059c45b 100644
--- a/docs/config.rst
+++ b/docs/config.rst
@@ -36,6 +36,8 @@ download_strategy
 Download strategies dictate what is getting downloaded from a source. Each
 download strategy has its own set of parameters.
 
+.. _url:
+
 url
 '''
 .. autoclass:: ytdl_sub.downloaders.generic.url.UrlDownloadOptions()
@@ -45,8 +47,7 @@ url
 multi_url
 '''''''''
 .. autoclass:: ytdl_sub.downloaders.generic.multi_url.MultiUrlDownloadOptions()
-  :members: urls
-  :member-order: bysource
+  :members: urls, variables
 
 -------------------------------------------------------------------------------
 
diff --git a/src/ytdl_sub/downloaders/generic/validators.py b/src/ytdl_sub/downloaders/generic/validators.py
index 6c172abc..0b345f2f 100644
--- a/src/ytdl_sub/downloaders/generic/validators.py
+++ b/src/ytdl_sub/downloaders/generic/validators.py
@@ -71,7 +71,7 @@ class UrlValidator(StrictDictValidator):
     @property
     def url(self) -> OverridesStringFormatterValidator:
         """
-        URL to download from, listed in priority from lowest (top) to highest (bottom). If a
+        Required. URL to download from, listed in priority from lowest (top) to highest (bottom). If a
         download exists in more than one URL, it will resolve to the bottom-most one and inherit
         those variables.
         """
@@ -175,10 +175,20 @@ class MultiUrlValidator(StrictDictValidator, AddsVariablesMixin):
     @property
     def urls(self) -> UrlListValidator:
         """
-        Required. The Soundcloud user's url, i.e. ``soundcloud.com/the_username``
+        Required. A list of :ref:`url` with the addition of the ``variables`` attribute.
         """
         return self._urls
 
+    @property
+    def variables(self) -> DictFormatterValidator:
+        """
+        Optional. Source variables to add to each entry downloaded from its respective :ref:`url`. The top-most
+        :ref:`url` must define all possible variables. Other :ref:`url` entries can redefine all of them or a subset of
+        the top-most variables.
+        """
+        # keep for readthedocs documentation
+        return self._urls.list[0].variables
+
     def added_source_variables(self) -> List[str]:
         """
         Returns