Adding anchor links within the same webpage

This is not related to synths at all but may help some who are trying to add links within
a single page when using google blogger.
esp if the page is very long.and needs a index for example.

Inside the Html mode ,write the code like:

<a href="#1">Index</a>


The link :

<h1 id="1">index</h1>


<a > contains href element to refer the link
<h1> contains the ID of href element.