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180 3 Terms and Definitions
181 For the purposes of this document, the following terms and definitions apply.
182 3.1
183 can - Used for statements of possibility and capability, whether material, physical, or causal.
184 3.2
185 cannot - Used for statements of possibility and capability, whether material, physical, or causal.
186 3.3
187 conditional - Indicates requirements to be followed strictly in order to conform to the document when the
188 specified conditions are met.
189 3.4
190 mandatory - Indicates requirements to be followed strictly in order to conform to the document and from
191 which no deviation is permitted.
192 3.5
193 may - Indicates a course of action permissible within the limits of the document.
194 3.6
195 need not - Indicates a course of action permissible within the limits of the document.
196 3.7
197 optional - Indicates a course of action permissible within the limits of the document.
198 3.8
199 referencing profile - Indicates a profile that owns the definition of this class and can include a reference
200 to this profile in its “Related Profiles” table.
201 3.9
202 shall - Indicates requirements to be followed strictly in order to conform to the document and from which
203 no deviation is permitted
204 3.10
205 shall not – Indicates requirements to be followed strictly in order to conform to the document and from
206 which no deviation is permitted.
207 3.11
208 should – Indicates that among several possibilities, one is recommended as particularly suitable, without
209 mentioning or excluding others, or that a certain course of action is preferred but not necessarily required.
210 3.12
211 should not – Indicates that a certain possibility or course of action is deprecated but not prohibited.