RFC 2119…

Please keep in mind that the key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED”, “MAY”, and “OPTIONAL” in this document are to be interpreted as described in RFC 2119.

One of my peers cited this in one of our project meetings.  Nebulous or poorly interpretive descriptions of technical requirements should be avoided.

\\ JMM