Info:
Enter the text in textarea from the left
Press "Update" from the menu.
Press "Play" to start playing the text.
Press "Pause" if you need a break
Press "Play" to continue after "Pause"
Press "Stop" to start again.
Press "Full Screen" to switch between full screen and screen with menu
Keeep the mouse on the menu and scroll the wheel to change speed.
Speed can be negative. A negative speed will scroll backwards.