Shall is to be understood as mandatory. Deviating from a “shall” statement requires derogation approved by Company.

Should is to be understood as strongly recommended to comply with the requirements of the specification. Alternatives shall provide a similar level of protection and this shall be documented.

May is to be understood as permission.

Can is to be understood as a physical possibility.

Must expresses a regulatory obligation.

All above may help how to ready standards, regulation, or similar.

Keep up good work

Arpad
veress@exprofessional.com
exprofessional.com

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