SRSs often have formal structure to them. The IEEE standard is what
most people look to. In case you are interested, you can look here
(previous versions of the course required students to complete a real
SRS):
830-1998 -- IEEE Recommended Practice for Software
Requirements Specifications
This document is available on-line to UW library patrons. You can
access the document directly from campus (via the above link). If you
are off campus, then you'll need to come in on one of the campus VPNs.