That is a footnote. Now the concept of footnotes is to include a small number in the body of the document and then expand on that with one or two paragraphs at the bottom of the page. Unfortunately, in your case, the footnote in your sample actually contains pages of content so it wraps over onto subsequent pages. The anchor for the footnote content is the superscript '1' in the paragraph above the '2'. If you cut that 1 from the page you will discover the multiple pages of the footnote disappear.

You could choose to convert the footnotes to endnotes in which case the 'footnote' appears at the end of the document rather than intruding on that current page and flowing onto the next couple. This would allow the content of the document to 'flow' in a more logical way for both authoring and reading. To convert to endnotes in Word 2013, go to the References tab on the ribbon and click on the little dialog launcher in the bottom right corner of the Footnotes group on that ribbon. In the dialog that appears, click on the Convert button.

Alternatively, you could copy the content of the footnote into the body of the document and then remove the footnote. To do this, click in the paragraph under the '2' and press Ctrl-A to select the entire footnote text and then copy it to your clipboard. Then go to the little superscript 1 and delete it and then paste in your clipboard contents to wherever that text needs to go.

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Andrew Lockton
Chrysalis Design, Melbourne Australia