Formerly Known As...
An Application without a Name
Inside the bundle of applications that makes up the paid version of Acrobat 4.0, there is an upgrade to Acrobat Exchange 3.01 that lost it's name!
Now it is referred to as Adobe Acrobat, the same name as the bundle, leaving some to identify it as "the application formerly known as Acrobat Exchange".
Fast Web View
This feature of PDF files on the web is formerly known as "page-at-a-time downloading", and is also formerly known as "byteserving".
Flavors
With the release of Acrobat Capture 3.0 in the year 2000, Adobe Systems — keeper of the official Portable Document Format names — has renamed the various "flavors" of PDF. Here are the new names and their former titles.
PDF/Image was PDF/Image Only
PDF/Multiresolution Image was PDF/Enhanced Image Only
PDF/Searchable Image was PDF/Image + (Hidden) Text
PDF/Formatted Text & Graphics was PDF/Normal
PDF/Formatted Text & Graphics is also the type of PDF which is created with Acrobat Distiller or Acrobat PDFWriter (from digital source files).
While only PDF/Searchable Image and PDF/Formatted Text & Graphics are the only formats containing text to be full-text-indexed by PDF WebSearch, all formats have index field storage capabilities, and the index field values can be used for searching with PDF WebSearch.
PDF/Image
No text here, just a single image representing the entire page.
PDF/MultiResolution Image
Has different kind of images in separate layers. 1-bit bitonal images for text regions, color or grayscale for graphics.
PDF/Searchable Image
A single page image with a hiddent text layer underneath.
PDF/Formatted Text & Graphics
The image of the text on the page has been replaced by ASCII text with appropriate fonts and point sizes and text attributes (bold, italic).
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