Index: wp-content/themes/twentythirteen/rtl.css
===================================================================
--- wp-content/themes/twentythirteen/rtl.css	(revision 23549)
+++ wp-content/themes/twentythirteen/rtl.css	(working copy)
@@ -7,4 +7,66 @@
 See http://codex.wordpress.org/Right_to_Left_Language_Support
 */
 
-/* TODO */
\ No newline at end of file
+/**
+ * Table of Contents:
+ *
+ * 4.0 - Header
+ *   4.2 - Navigation
+ * 5.0 - Content
+ *   5.7 - Post/Paging Navigation
+ *   5.8 - Author Bio
+ * ----------------------------------------------------------------------------
+ */
+
+/**
+ * 4.0 Header
+ * ----------------------------------------------------------------------------
+ */
+
+
+/**
+ * 4.2 Navigation
+ * ----------------------------------------------------------------------------
+ */
+
+/* Navbar */
+.main-navigation .searchform {
+	left: 0;
+	right: auto;
+}
+
+
+/**
+ * 5.0 Content
+ * ----------------------------------------------------------------------------
+ */
+
+
+/**
+ * 5.7 Post/Paging Navigation
+ * ----------------------------------------------------------------------------
+ */
+
+.navigation .nav-previous {
+	float: right;
+}
+
+.navigation .nav-next {
+	float: left;
+}
+
+
+/**
+ * 5.8 Author Bio
+ * ----------------------------------------------------------------------------
+ */
+
+.author-info {
+	text-align: right; /* gallery & video post formats */
+}
+
+.author-avatar {
+	float: right;
+	margin: 0 0 30px 30px;
+}
+