Purpose of a Design Specification

Manufacturing specifications define the processes and methods necessary to produce a given product; including converting raw materials, components, or parts into WIPs (work-in-process) or finished goods.

Elizabeth Stott has written:

'The specification and control of the quality and propertiesof cloth used in the garment manufacturing industry'

It is not a light, but a decal or printed type. It is a specification, I believe. Has nothing to do with a warning or message.

"http://wiki.answers.com/Q/What_are_the_main_performance_criteria_relating_to_the_specification_of_five_vocationally_relevant_construction_materials_including_as_appropriate_basic_details_of_the_production_and_or_manufacturing"