A well written pattern makes you a promise. Information provided in the crochet pattern allows you to complete the crochet project. Without all of it, how will finish? Whether you are buying a book of patterns or from independent designers like me, the standard should be followed.
Review the information from ANATOMY OF A CROCHET PATTERN to verify that you are getting everything needed.
It is okay to contact a crochet designer if you think you need something more.
Download and add the ANATOMY OF A CROCHET PATTERN GUIDE to your quick reference library.