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Because the ability to share models between development environments is an important feature of
ACIS, it is recommended that each developer first create an organization attribute class that is immediately descended from
ATTRIB and has a unique name in the
ACIS community. (The organization attribute class is also known as the
master attribute.) This is accomplished by using a
sentinel, which is a two- or three-character string that is embedded in the class name and identifies the development organization.
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Note
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Contact Spatial's customer support department to have a unique sentinel assigned to your ACIS development project.
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The sole purpose of the organization class is to identify the development organization (company) owning that attribute. Organization classes cannot be instantiated.
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Application-specific attribute class derivations are distinguishable from classes of the same name created by other developers by their organization name in SAT files. By a similar mechanism, all attributes from a specific developer are easily detected in an attribute list attached to an
ENTITY.
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