I was going through some of the charts today and found that there are so many errors I wanted to cry, especially as a lot of the charts that were on here prior to my suspending operations were no longer available as Sibelius charts and only as pdfs. Today, however, after puzzling over it for years, I have finally worked out how to use the photoscore facility and to generate an editable Sibelius file from a pdf. Today I revisited a Jeff Berlin chart 'All The Greats' which has a couple of sections that were in completely the wrong key to the other parts of the chart. I think it is now correct. What this means is that, any time I find an error on a older chart (and there are many), I can potentially correct the error without having to start the whole chart from scratch.