PDF Files Are BMPs?

Subject: PDF Files Are BMPs?
From: Tim Altom <taltom -at- IQUEST -dot- NET>
Date: Fri, 20 Sep 1996 06:08:00 EST

Did I catch a message here that PDF was bitmaps?

Oh, good heavens no! PDF is actually a terribly complex format with several
layers. Much of it is reminiscent of PostScript, actually. A PDF file has a
page description, but it also has layers that describe the file, itself.

Another poster asked about page additions. PDF, unlike many other formats,
doesn't shuck changes; it merely supplants them. It can do this because PDF
can tack on the changed page to the end of the file, rather than trying to
shoehorn it in. This leaves the original in place in case you want to change
it back, while letting you change a single page in a long file.

Tim Altom
Vice President, Simply Written, Inc.
317.899.5882 (voice) 317.899.5987 (fax)
FrameMaker support ForeHelp support
FrameMaker-to-HTML Conversions


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