The exact phrase refers to a specific page or digital document excerpt from the celebrated textbook, Fashion Illustration Techniques: A Super Reference Book for Beginners , authored by Japanese fashion professor Zeshu Takamura .
Fabric Rendering and TextureOne of the most challenging aspects of illustration is making a drawing look like silk, denim, or fur. Takamura’s techniques involve: Fashion Illustration Techniques Zeshu Takamura 127.pdf
Folds do not occur randomly. Takamura categorizes them into predictable mechanical behaviors based on points of tension: The exact phrase refers to a specific page
The PDF format is excellent for this book because each chapter typically follows a "Rule $\rightarrow$ Example $\rightarrow$ Practice" format: Fashion Illustration Techniques Zeshu Takamura 127.pdf