Using the trace keyboard, Your finger from one letter to another. see, Using the trace – HTC One Remix User Manual
Page 71: Keyboard

2. Tap Personal dictionary.
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To edit a word, phrase, or shortcut, tap the item in the list.
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To delete items from the dictionary, tap > Delete. Select the
words you want to remove, and then tap Delete.
Using the Trace keyboard
Instead of tapping the keys on the onscreen keyboard, you can "trace" to
type words.
You need to turn on the Trace keyboard in Settings > Language &
keyboard > HTC Sense Input.
1. Slide your finger from one letter to the next to enter a word.
2. Lift your finger when the word is completed.
3. If you want to continue entering text, slide your finger over the
letters again to enter the next word.
If the word that appears after you traced isn't the one you want,
you can:
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Tap a word from the suggestion list.
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Tap the arrow next to the suggestion list to see more choices.
Your first week with your new phone
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