  :Partly my fault, no doubt. The updated file was slow to return and I therefore pressed the send button a second time. I thought I had caused the conflict myself and therefore did not save the file. A minute or two later I realized my update had been lost. The browser I use is IE9 as I think it is used much more widely than Firefox and I like to see what the users out there are actually seeing. Firefox is good too but sometimes significantly changes the display, for example by reformatting the references into three columns. I have been wondering, btw, whether there is any easy way of reproducing on a PC or laptop the screen displays people are getting on their smart phones, iPads, etc. I would also be interested to know what proportion of Wikipedia page views are from these devices. It may be necessary to take account of these trends in future editing. Any ideas? Are there any stats?   