[pdftex] Forward looking object references

[Andreas Matthias]

Igor Khomyakov wrote:

> It happens because test.pdf (the example that I posted) is not 100%
> compliant pdf document (there's no xref table, the sizes/offsets can be off,
> etc.)

Uups. I didn't recognize that. Since xref tables are a very
fundamental feature of pdf, it is no surprise ghostscript
cannot display it. But it is a surprise that AR can.

Ciao
Andreas