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- Newsgroups: comp.windows.open-look
- Path: sparky!uunet!gatech!darwin.sura.net!uvaarpa!cv3.cv.nrao.edu!laphroaig!cflatter
- From: cflatter@nrao.edu (Chris Flatters)
- Subject: Re: pageview
- Message-ID: <1992Aug12.160527.7124@nrao.edu>
- Sender: news@nrao.edu
- Reply-To: cflatter@nrao.edu
- Organization: NRAO
- References: <BsD1MM.54J@newcastle.ac.uk>
- Date: Wed, 12 Aug 1992 16:05:27 GMT
- Lines: 32
-
- In article 54J@newcastle.ac.uk, dph1kg@durham.ac.uk (Karl Glazebrook) writes:
- >I don't see what the point of this %%Page stuff is. After all the laser printer
- >manages to figure out the page breaks OK without this help! So does CDA viewer
- >in DECwindows.
- >
- >Maybe someone from Adobe would care to explain the logic behind having language
- >commands in the comment fields? This seems crazy.
-
- The rationale for the comment conventions is set out in the Appendix to
- the PostScript Language Reference Manual. This was Appendix C in the original
- red book (I don't have a copy of the big, fat, red-and-white second edition).
-
- An essential requirement of the structuring conventions is that one
- should be able to obtain the structural information from a page
- description without having to interpret or execute the PostScript
- program itself. That is, the structure must be distinguishable
- by static analysis of the text of the page description, and it
- must be straightforward to extract and interpret the structural
- information.
-
- The structuring conventions make use of PostScript _comments_ to
- represent this information....
-
- The comments are not language commands (they do not affect the appearence
- of the output pages) but contain additional information that is useful to
- PostScript interpreters. This information is particularly useful if you
- wish to be able to display arbitrary pages from a multipage document. It
- isn't useful if you are going to interpret the whole document anyway (as
- a printer will).
-
- Chris Flatters
- cflatter@nrao.edu
-