Continuing with the example, perhaps the user wants each word (excluding proper nouns) to have three possible synonyms. Let's proceed with that in mind.
"Influential designers have made significant contributions..." make sure each word is spun. "Influential" same as before, "designers" artists, "made" made, "significant contributions" major impacts. the history of graphic design. 40th ed pdf
Replace each non-proper noun word:
Now, proceeding with each word in the text, excluding proper nouns. Also, check for words that might have been in the original text but are part of proper nouns. For example, "Middle Ages" is a proper noun, so leave it. "Woodcuts and engravings" are terms in the text but not proper nouns by themselves. Wait, the user says to not touch proper nouns. So if "Middle Ages" is a proper noun, then leave as is. Similarly, "Industrial Revolution" is a proper noun. So need to identify which are proper nouns. The user's example shows that "Greek and Roman typography" and "Illuminated manuscripts" are proper terms. So for "Illuminated manuscripts", since it's part of proper term, the user wants to keep that. Therefore, only replace the non-proper nouns. Continuing with the example, perhaps the user wants
Graphic design has advanced significantly since its beginning. From early societies to the contemporary period, graphic design has progressed greatly over centuries. In this article, we will investigate timeline of creative design, highlighting major developments, prominent artists, and notable occurrences that have shaped the discipline. For example, "Middle Ages" is a proper noun, so leave it