ContentScaler is an Adobe® Acrobat® plug-in that:
This tool is especially useful for scaling the contents of documents that do not print correctly because their margins are too small.
It is also useful when used in conjunction with Mapsoft MediaSizer to change the media size of a document, for example if you wanted to change a document into a booklet.
Anything within the Annotation layer, including link boxes etc is not scaled. If you want to include these items in your scaled document you should use Flattener first.