http://en.wikipedia.org/wiki/Portable_Document_Format (01)
It is open and is an ISO standard identified as ISO 32000-1:2008.
There are a number of open source, free and proprietary software
packages and programming libraries for reading, creating annotating and
editing PDF files. (02)
Not sure that that has any bearing on its usefulness in the context of
this forum. (03)
Ron (04)
Alexander Garcia Castro wrote:
> Sorry if this is not the right venue; I decided to send this email
> because in the past I have seen some semantic web issues being
> discussed here.
>
> I would like to know how applicable could the PDF format be within the
> context of the Semantic web? The PDF format is closed; annotating
> PDFs, as in tagging not the file but the information within the file,
> is not possible by means different from those provided by ADOBE. For
> instance, if I wanted to tag a word, or an image within, inside, a PDF
> I would have to do it with my acrobat reader -the latest version; But
> if I wanted to facilitate such operation via WEB I could only do it if
> and only if I had the XSLT so I could transform the PDF into XML. This
> limitation is, IMHO, a huge one within the context of the semantic web
> where we should be able to define links and use them. Furthermore,
> being forced to have a third party application just for displaying a
> file that should be displayed directly by the browser is not a nice
> feature. If PDF was open it could be rendered by the browser. Aren't
> closed formats such as PDF viable within the context of the SW? After
> all the PDF was a solution within the context of portability and
> exchange of information; the main problem it was solving was a simple
> one "I want my document to look on display and once printed, the same
> everywhere" and "I want people to be able to read my documents without
> loosing the format of the document and without having to consider the
> OS". Isn't the PDF obsolete within this context?
>
>
>
> --
> Alexander Garcia
> http://www.usefilm.com/photographer/75943.html
> ------------------------------------------------------------------------
>
>
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