added terabytes to number helper
added number helper guide pages, menus, toc, etc
diff --git a/user_guide/helpers/path_helper.html b/user_guide/helpers/path_helper.html
index c2aa347..1997959 100644
--- a/user_guide/helpers/path_helper.html
+++ b/user_guide/helpers/path_helper.html
@@ -89,7 +89,7 @@
 

 <div id="footer">

 <p>

-Previous Topic:&nbsp;&nbsp;<a href="html_helper.html"> HTML Helper</a>

+Previous Topic:&nbsp;&nbsp;<a href="number_helper.html">Number Helper</a>

 &nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

 <a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

 <a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;