diff --git a/lib/scripture_extract.ex b/lib/scripture_extract.ex
index 19deab7..56189b0 100644
--- a/lib/scripture_extract.ex
+++ b/lib/scripture_extract.ex
@@ -68,7 +68,7 @@ defmodule ScriptureExtract do
   end
   ###############################################################
 
-  def write_to_volume_index(output_dir, result, chapter_number = 1, book_number = 1) do
+  def write_to_volume_index(output_dir, result, _chapter_number = 1, _book_number = 1) do
     volume_title = get_result_value(:volume_title, result)
     book_title = get_result_value(:book_title, result)
 
@@ -122,21 +122,28 @@ defmodule ScriptureExtract do
     book_title = get_result_value(:book_title, result)
 
     subtitle = get_book_subtitle(book_id)
+    volume_title = get_result_value(:volume_title, result)
+    subtag = String.downcase(String.replace(volume_title, " ", "-"), :ascii)
+    tag = "#scriptures/#{subtag}"
 
     contents = "# #{book_title}\n"
-    contents = write_book_subtitle(contents, subtitle)
+    contents = write_book_subtitle(contents, subtitle, tag)
     IO.binwrite(file, contents)
   end
 
   def write_book_header(_, _, _) do end
 
-  def write_book_subtitle(contents, "") do
+  def write_book_subtitle(contents, "", "") do
     "#{contents}\n"
   end
 
-  def write_book_subtitle(contents, subtitle) do
+  def write_book_subtitle(contents, subtitle, "") do
     "#{contents}## #{subtitle}\n\n"
   end
+
+  def write_book_subtitle(contents, subtitle, tag) do
+    "#{contents}## #{subtitle}\n#{tag}\n\n"
+  end
     
   ###############################################################
   def extract_chapter(output_dir, result) do
@@ -159,7 +166,10 @@ defmodule ScriptureExtract do
     book_title = get_result_value(:book_title, result)
     chapter_number = get_result_value(:chapter_number, result)
 
-    IO.binwrite(file, "# #{book_title} #{chapter_number}\n\n")
+    volume_title = get_result_value(:volume_title, result)
+    subtag = String.downcase(String.replace(volume_title, " ", "-"), :ascii)
+
+    IO.binwrite(file, "# #{book_title} #{chapter_number}\n#scriptures/#{subtag}\n\n")
   end
 
   def write_chapter_header(_, _, _) do end
@@ -167,7 +177,7 @@ defmodule ScriptureExtract do
   def extract_verse(result) do
     verse_number = get_result_value(:verse_number, result)
     scripture_text = get_result_value(:scripture_text, result)
-    "#{verse_number} #{scripture_text}\n\n"
+    "#{verse_number} #{scripture_text} ^#{verse_number}\n\n"
   end
 
   defp get_result_value(:book_id, [_, book_id, _, _, _, _, _, _, _]) do