It has options for customizing layout — line - spacing, margins, text alignment, font size, font type, background and text color, and you can adjust brightness on the fly by swiping
vertically along the left side of the screen.
If you place the speaker
vertically with the touch sensitive controls
along the
left side, or horizontally with the touch - sensitive controls on the bottom, you'll get a warning message telling you that the speaker is upside down.