Displaying information where it is preferable to retain a rigid format can be difficult when left to a proprietary browser to interpret. Formats, like HTML, may be inadequate to fulfill the needs of a document where form is implicitly tied to content. This need was address by Adobe in the early 90's in the form of the PDF. PDF, Portable Document Format, was developed from the cumbersome and clunky post-script file and was invented to fulfill the need for a platform-independent document-oriented display format. Initially, Adobe Distiller 1.0 was released at the prices $694 - personal, and $2495 - corporate network, and was thus slow to catch on. However, with a significant price decreases, increased development and options, the availability of a free and fairly versatile reading software, Adobe pdf’s have become the industry standard for document solutions.