Re: [docbook-apps] Re: Request for help with olink target data fileand @href attribute

> > PDF links are different from Web links from PDF's point of view; the
> > same link cannot be both a PDF link and a Web link in the same file.
> 
> What is the expected behaviour from clicking on a web link, as opposed
> to a PDF link?
> 
> Is clicking on a PDF link expected to open the other PDF document in
> the viewer, and position the cursor at the correct spot?  Is clicking
> on a web link expected to open the link inside the default web browser
> (in effect using it as an external viewer)?
> 

In short, yes, it is. PDF links are normally handled directly by PDF viewers
by loading the target PDF in the same or a different window of the viewer
and positioning at "the correct spot", in the same way as with internal
destinations. Arranged in this way, PDF documents are best suited for
off-line reading, for example, documentation sets shipped on removable media (CD,DVD).

Web links, however, are handled through delegation to a web browser, that's why
a command line for an external www browser can be set in Acrobat Reader, for example.

David Tolpin
http://davidashen.net/