He meant that the use of the meaning of words in a text must remain in the text whenever necessary.
We can arrive at this answer because:
Thus, when writing a text, when a word must be modified, you must pay attention to its meaning and use it, as the text can become richer than with the use of synonyms.
This question is about the text "Draft No.4" and the passage the question refers to can be seen in the figure below.
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