Impress is an Acrobat plug-in that enables text to be added to a range of pages in a PDF file (text stamping).
An impression (Text stamp) can be set either as a watermark, which is on a layer below all of the existing text and images, or above existing text, where it can be used for headers and footers, page numbering etc. Variables can be set to define page numbering, total number of pages and date and time. Bates numbering is supported.
It also supports the foreign language characters in Acrobat base fonts such as Times, Helvetica, Courier.