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At 10:45 AM -0400 7/17/03, Todd Kueny wrote:
The PDF Spec says, regarding the PDF operators BX and EX, that "They bracket a compatibility section, a portion of a content stream within which unrecognized operators are to be ignored without error."
Correct.
The only place I've ever seen them used is that Distiller (4/5) will place the 'sh' (shading) operator inside of them so that if that PDF were to be opened up in older viewers, it wouldn't barf.
Using a PDF page containing operators between BX and EX must, by definition in the standard, generate a viewer- or RIP-specific rasterization without error.
Correct. If you don't understand what is in there - you ignore it.
Currently we require our customers to re-process such PDF files until all BX/EX operator sequences are removed - though this obviously affects the fidelity of the output.
Yup! And I don't know how you would do this "reprocessing", since Distiller is quite happy to use BX/EX.
LDR -- --------------------------------------------------------------------------- Leonard Rosenthol <mailto:[EMAIL PROTECTED]> Chief Technical Officer <http://www.pdfsages.com> PDF Sages, Inc. 215-629-3700 (voice) 215-629-0789 (fax)
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