Hello collegues,
I don't know whether you already knew RFC2119, but it discusses the
official use of `should', `may', `must' and so on. It is an enlighting
document.
We shall adapt our policy requirements to match the document, IMO.
David
PS: must | shall = required,
must not | shall not = prohibites the specification
should = recommended
should not | not recommended = `think before implement this behaviour'
may = optional
PPS: the IEEE usage is analogous (sp?).