Because the proceedings were not intended to be printed, each paper starts as a two-page spread, with the first page as the left-hand page of the spread. This better suits modern wide displays that can easily show two pages side-by-side. The front matter also had several elements that started on right-hand pages. These can now start on either page, with no blank pages in the front matter.
There are also some things that were not done because of not going to print: for example, the cover image exactly fits its A4 page. If the proceedings were meant to be printed, the image would be larger than the page – it would ‘bleed’ past the edges of the paper – to avoid any misalignment in the printing and cutting leaving white edges on the paper.