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* `move_next_word_start`
* `move_prev_word_start`
* `move_next_word_end`

runtime/help/move_next_word_end.txt

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+`move_next_word_end`
+
+Moves and selects forward, stopping at
+the last character of the current word.
+
+--- Examples ---
+
+The cursor moves forward, stopping at the end of 'These'
+and selecting everything along the way.
+┌────────────────────┐     ┌────────────────────┐
+│ [T]hese are words. │ --> │ (These] are words. │
+└────────────────────┘     └────────────────────┘
+┌────────────────────┐     ┌────────────────────┐
+│ Th[e]se are words. │ --> │ Th(ese] are words. │
+└────────────────────┘     └────────────────────┘

runtime/help/move_next_word_start.txt

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+`move_next_word_start`
+
+Moves and selects forward, stopping before
+the first character of the next word.
+
+--- Examples ---
+
+The cursor moves forward, stopping before the start of 'are'
+and selecting everything along the way.
+┌────────────────────┐     ┌────────────────────┐
+│ [T]hese are words. │ --> │ (These ]are words. │
+└────────────────────┘     └────────────────────┘
+┌────────────────────┐     ┌────────────────────┐
+│ Th[e]se are words. │ --> │ Th(ese ]are words. │
+└────────────────────┘     └────────────────────┘

runtime/help/move_prev_word_start.txt

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+`move_prev_word_start`
+
+Moves and selects backward, stopping at
+the first character of the previous word.
+
+--- Examples ---
+
+The cursor moves backwards, stopping at the start of 'These'
+and selecting everything along the way.
+┌────────────────────┐     ┌────────────────────┐
+│ These[ ]are words. │ --> │ [These )are words. │
+└────────────────────┘     └────────────────────┘
+┌────────────────────┐     ┌────────────────────┐
+│ These [a]re words. │ --> │ [These )are words. │
+└────────────────────┘     └────────────────────┘
+┌────────────────────┐     ┌────────────────────┐
+│ Th[e]se are words. │ --> │ [The)se are words. │
+└────────────────────┘     └────────────────────┘