[thro1]

> but it was a bad design decision to store long blocks of HTML inside XML attributes instead of XML elements.

not at all - it's that what allows the simplest structure for nesting of outline elements.

An <outline> is an XML element, possibly containing one or more attributes, and containing any number of <outline> sub-elements.

[rcade]

XML elements can contain both text and child elements. Character data didn't have to be stored in an attribute to allow outline nesting.

<?xml version="1.0" encoding="UTF-8"?>

<node>

    <node> 

      <![CDATA[ Hello I am text ]]>

      <node> ... </node>

      <node> ... </node>

    </node>

</node>

[thro1]

It's about outliners. You move just one thing.

[rcade]

Child elements of character data can be moved around too.