H1 Header
=========

H2 Header
---------

H1 Header, underline could be of any length
=

H2 Header, underline could be of any length
-

H1 Header, underline could be of any length
=================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================

H2 Header, underline could be of any length
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

This is not an header because the underline must begin at the beginnning of the line
 =

This is not an header because the underline must begin at the beginnning of the line
.=