<COMPANIES> can be used to describe the companies being involved in the procject. With respect to CDF this is used mainly to specify copyright information and the involved persons. Usually there is more than one company involved in the project. The company which generated the file is determined by following <TEAM-MEMBER-REF> within <ADMIN-DATA>. In simple cases there is only one company, so this lookup is not really necessary.
For an example, see 2.22. PROJECT-DATA

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