On understanding blogger template macros and sections

Question

What's the difference between <b:section-contents id='xx'> and <b:section> ? Or

 <aside>
   <macro:include id='main-column-right-sections' name='sections'>
     <macro:param default='2' name='num' value='1'/>
     <macro:param default='sidebar-right' name='idPrefix'/>
     <macro:param default='sidebar' name='class'/>
     <macro:param default='true' name='includeBottom'/>
   </macro:include>
 </aside>

What's aside for in this context? What is macro? How do these things affect the templates?

Answer 1

First, aside stands for sidebar according to HTML5 . Second, macro is a Blogger XML function which allow user to change template layout dynamically by Blogger template designer. more info about blogger macro.