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It is the use of markdown commands. For example...

<div class='pull-left'>

upload picture here

</div>

This part is for your text...


The command above appears like this:


power up.png

This part is for your text...


The same applies to putting the picture on the right hand side. In that case, you will use the command <div class='pull-right'>. All other things remain the same.
I hope this helps.

thanks for the reply