According to the article, this function:
Microsoft Word allows you to quickly insert sample text into a document. To do this, type =rand() in the document where you want the text to appear, and then press ENTER.Here's how to do it:
The inserted text is that hardy perennial: “The quick brown fox jumps over the lazy dog,” which contains every letter in the English alphabet.
The first number is the number of paragraphs, and the second the number of sentences per paragraph.
Open a new document file
Type =rand (X,Y) where X and Y are random numbers