Share is the button to bring up the menu with myriad actions like bookmarking, adding to reading list, printing, running third party actions, etc. Has been for

Share is the button to bring up the menu with myriad actions like bookmarking, adding to reading list, printing, running third party actions, etc. Has been for years. Obvious? Maybe not. Obscure? Also no. There are very few buttons you can click to begin with: it has to be either AA or Share.