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Subject: Negative keywords - proposed text
Text (proposed) to be added to the end of Section 2.2.3 Optional Statements: Prescription Level "The negative keywords 'MUST NOT' and 'SHOULD NOT' are handled as follows: With 'MUST NOT' the 'MUST' determines the prescription level, in this case 'mandatory', and the 'NOT' is transferred to the predicate. For example: [statement 203] "A widget MUST NOT have a painted casing." TA id: widget-TA203-1 Normative Source: specification statement 203 Target: widget Predicate: [the widget] does not have a painted casing. Prescription Level: mandatory Similarly with 'SHOULD NOT': [statement 204] "A widget SHOULD NOT have a plastic battery holder." TA id: widget-TA204-1 Normative Source: specification statement 203 Target: widget Predicate: [the widget] does not have a plastic battery holder. Prescription Level: preferred" -- Stephen D. Green Document Engineering Services Ltd http://www.biblegateway.com/passage/?search=matthew+22:37 .. and voice
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