Press Ctrl or Cmd + s(screenshot) to capture the current view and download it as a PNG file
Press Ctrl or Cmd + i(introduction) to toggle the introduction and instructions
Press Ctrl or Cmd + t(introduction) to toggle the sidebar menu
Press Ctrl or Cmd + h(help messages) to toggle tooltip messages that are shown when mouse pointers are on buttons.
Press Ctrl or Cmd + u(UP) to move to the top of the page.
Press Ctrl or Cmd + d(Down) to move to the bottom of the page.