Entering Text Using The On-Screen Qwerty Keyboard; Using Additional Functions - Samsung UN65KU7500 E-Manual

Setting up the keyboard
In Settings
Keyboard Language
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Keyboard Type
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Input Language Shortcut
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Entering Text using the On-Screen QWERTY Keyboard

Use the QWERTY keyboard to enter text on your TV.
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The image on your TV may differ from the image above depending on your model and geographical area.

Using additional functions

Select on the QWERTY keyboard screen. The following options are available:
" The options available may differ depending on the function running currently.
Recommended text
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Reset recommended text data
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Predict Next Character (when using direction buttons)
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Language
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System Input Device Manager, you can set the following functions.