Samsung GT-P7100/M16 User Manual page 41

Touch a suggestion to enter it in place of the underlined word in the text field.
Touch the keys on the keyboard to enter text.
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As you type, words that the keyboard has suggestions for are underlined.
If you set the keyboard to show correction suggestions, they appear in a strip above the keyboard. The underlined
word in the strip is the suggested word. You can also touch another word in the strip to enter it instead.
You turn the suggestion feature on or off and change whether suggestions are shown with the Android keyboard
settings.
Entering and editing text
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