Before revision: Process |chapter=Chapter 6: </ref> The crux of the requirement is the description of the required behavior, which must be clear and readable.
After revision: Software requirements|title=Applied Software Project Management |first1=Andrew |last1=Stellman |first2=Jennifer |last2=Greene |publisher=O'Reilly Media |pages=97–130 |year=2005 |isbn=9780596553821 |access-date=15 June 2018Process |chapter=Chapter 6: </ref> The crux of the requirement is the description of the required behavior, which must be clear and readable.