In Word try typing =rand() then press Enter. It will place some
paragraphs of common text referring the the habits of foxes and dogs.
The replacement of text which takes place is some kind of
AutoFormatting, according to Edit/Undo.
You can get greater control over how much is inserted by adding
parameters. The full command syntax is =rand([p]. [s]) where p is the
number of paragraphs (default = 3) and s is the number of sentences
per paragraph (default = 5). Both parameters are optional, =ran(( will
give you 2 paragraphs of 5 sentences each.
=rand(3,2) will give you three paragraphs of text with two sentences
in each paragraph.