When discussing file formats, something must be said about the PDF format. PDF (Portable Document Format) is the 600-Pound gorilla of file documents. Originally a proprietary document format created by Adobe, PDFs have gained popularity as solving a specific problem, that is to create a document and be assured that it will look exactly the same on any system that the document is viewed on.
Unfortunately, there is a cost to the portability of PDF documents. It is an extremely complex format and is notoriously difficult to decipher, even for those who read the 1,000+ pages of the specification.
Thankfully, as PEAR users, we don't have to worry about reading the lengthy technical specification and can simply use the