I can't see the document to which you linked, but it sounds like a 2-column, (1 per 'page'), layout on a landscape page which is sized at a 16:9 aspect ratio to roughly match the available screen space. The resulting PDF is set (in Acrobat) to open at a "Fit Page" magnification.
could somebody be more precise in explaining in simple terms what to do please?
Export your ID file to PDF using spreads. That is how that file was exported. Make sure your document has enough pages to be divisable by 4.
MW Design wrote:
Make sure your document has enough pages to be divisable by 4.
For an unimposed screen version the page count is irrelvant for exporting spreads. You only need to be divisible by 4 if you intend to print folded signatures.
Yep, you're right, Peter.
I was somehow thinking page two got sucked up to page one in the PDF.