Where HTML (hypertext markup language) is selected, the results are displayed directly in the browser, i.e. no additional software is needed for viewing or printing. Moreover, it is relatively easy to copy HTML-formatted tabular information into other applications for further processing.
Given the use of links to embed graphics and the difficulty of controlling page breaks in HTML documents, this format is not particularly suitable for generating archivable documents or printing longer files.
Where PDF (portable document format) is selected, the results are output as a downloadable file. While this format is ideal for archiving purposes, e-mail attachments and long printouts, it requires installation of the Acrobat Reader program.
This is obtainable free of charge at http://www.adobe.com.