[pdftex] layer-based presentations

[Pawel Jackowski]

Hi pdfTeX users!

I'm working on pdf presentations. PDF 1.5 serves so called sub-page 
navigation, based on layers (PDF 1.5 optional content). I've implemented 
layers support for pdftex and links that switch layers on and off. But 
PDF 1.5 spec says also, that such sub-page nagigation could be achieved 
not only by clickable links but also via ,,user request'', such as 
left/right arrow button.

I've tried to get this effect according to (pure) documentation, without 
any results. Unfortunatelly, pdf spec doesn't serve any example for this 
particular issue. Does anybody have such an example? What i need is a 
pdf document with layer-based navigation.

Thanks, Pawel