ay that holds the snippet, and the innermost set is
because the first (and only) element in the snippet is a tag, not
text.  Note that the code <tt class="docutils literal"><span class="pre">[&quot;img&quot;,{src:&quot;/images/mypic.jpg&quot;}]</span></tt>
is invalid as an HTML snippet.  It would represent a snippet that
starts with &#8220;img&#8221; as text in the snippet (not a tag), but the second
item is neither a string nor an array, and so is illegal.  This is a
common mistake that should be avoided.<