Spellbook printed in A4 could be two-column with distinctive paragraphs... Maybe some metalanguage for marking paragraph in spell description?
I'm not quite understanding, two column? Do you a sample layout to work with? (If I can't visualize it, then I won't be able to implement it. Also, is this for a standard Character or an actual spell book?
No feedback given by OP. Dropping priority of this request.