Writing a crochet pattern for one size has its challenges. But once we introduce more than one size, we now need to figure out how to inform our reader without confusing our reader. When patterns are written for up to 9 sizes, things can get a bit complex.
This guide will give you examples of how crochet designers can write for multiple sizes.
NOTE: This is not about grading a pattern (calculating numbers for each size). For grading advice, see my ebook A Simple Guide to Grading Crochet where I walk you step-by-step through the process of calculating the appropriate numbers for each size.
One pdf file with instruction on how to write a crochet pattern for many sizes. This is about the actual writing of the pattern, not how to calculate the numbers.