I have noticed the maximum no of apps that appear in 'Open in' is 10 and more frustratingly, new apps which sharing functions replace my favourite old apps (especially good reader app) in the 'Open In'. Is it possible to determine which apps appear in the 'Open In'?, increase the no? Or at least force my favourite apps to appear there or prevent them from being displaced? The only way I cope now is to delete the least favoured apps with sharing functions in order to allow my favourite apps to appear