Should't Win+X bring up the mobility center? Or where is the mobility center then on Win 8?
I think you mean LaTeXiT.
The trick with the PDF is made using Link Back. This is a framework for OS X, where applications can embed documents from other applications in their own documents. The embedded documents are still editable by the original application. It's similar to OLE on Windows, but much more lightweight. It's mainly based on PDF with some additional metadata. It's easy to implement and very nice for the user. I find it a quite elegant solution.
I expect the system font will be a bit smaller due to the sharper text.
[...] The number of pixels required to measure a point will change with dpi but the size of the font shouldn't.
I think what he meant was: They might reduce the size of the fonts. On a sharper display, a 10 point font might be as readable as a 12 point font on a not so sharp display.
Of course it will work fine for US citicens during their vaccation in Germany, because once you have registered no further filtering will happen (for now).
Anyone can make an omelet with eggs. The trick is to make one with none.