Comments
Parts of the text in reST source can be "commented out":
Any text which begins with an explicit markup start but doesn't use the syntax of any of the constructs above, is a comment.
See http://docutils.sourceforge.net/docs/user/rst/quickref.html#comments
This means: write ..␠, that is dot-dot-blank at the beginning of the
line, taking the indentation level into account.
Examples
Example:
..  So here we have a comment.
    It can spread over lines as
    long as you keep the indentation.
        
        Copied!
    
Example:
..  This text will not be shown,
    but, for instance, in HTML might be
    rendered as an HTML comment, if the html writer is set up for that.
        
        Copied!
    
Example:
..  here we start an unordered list:
*   one
*   two
    ..  this is another comment. Since it's within the list it is aligned
        with 'two', which is the contents of the second list item
*   three        
        Copied!