When you tap the volume rocker on the side of the tablet, you'll see two scales. One is for the tablet's media volume (top) and the other was added by Toshiba to balance the audio to either emphasize music or voice.
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Since the tablet screen is wide, the stock keyboard is big enough to type on with two hands. It's awkward using the keyboard in landscape mode with one hand, but you can make it a little easier by using gesture typing to draw a line connecting the letters in a word instead of tapping each letter.