Definitions

The following verbs are used throughout this document in accordance with the implication and context shown. These terms were taken from
BS 0. Reference accessed January 2016

Verb

Implication

Context

Must

An absolute requirement

BS 7666-1:2006 and BS 7666-2:2006 DEC-Addresses or DEC-NSG document implementation requirement.

Shall

An absolute requirement

BS 7666-1:2006 and BS 7666-2:2006 standard requirement.

Should

A recommendation

BS 7666-1:2006 and BS 7666-2:2006 standard or a DEC- Addresses or DEC-NSG document implementation recommendation. A particular item may be ignored, but the full implications shall be understood and carefully weighed beforehand.

May

Permission

BS 7666-1:2006 and BS 7666-2:2006 standard or a DEC- Addresses or DEC-NSG document implementation permission.

Can

Possibility or capability

BS 7666-1:2006 and BS 7666-2:2006 standard or a DEC- Addresses or DEC-NSG document implementation information.

Is

Description

BS 7666-1:2006 and BS 7666-2:2006 standard or a DEC- Addresses or DEC-NSG document implementation description.