Comment 1 for bug 1545516

I've taken the info about the usage of Alt+Super+s with live images from the following page:

https://help.ubuntu.com/community/Accessibility

Subtitle "Enabling the screen reader", one but last paragraph: "When you boot the live CD, you should hear a bongo drum sound. At this point, you can go ahead and enable Orca. Once again, the keyboard shortcut Alt + Super + S is used to enable orca. Orca should start speaking, and from this point you can select your language, and either boot into a live Ubuntu desktop by selecting the "Try Ubuntu" push button, or you can elect to install Ubuntu by selecting the "Install Ubuntu" push button."