The value of a tag is a sequence of zero or more "elements". Each element is either parsed text or a sub-tag. In this example, the value of the tag ABC is the parsed text "alphabet":
<ABC>alphabet</ABC>
In this example, the value of the tag ABC has four elements: 1) the parsed text "one", 2) the empty sub-tag DEF, 3) the parsed text "two" and 4) the sub-tag GHI:
