A data-name names a data item. A file-name names a file connector. These names are classified as either global or local.
A global name can be used to refer to the item with which it is associated either from within the source element in which the global name is declared, or from within any other source element which is contained in the source element which declares the global name.
A local name, however, can be used only to refer to the item with which it is associated from within the source element in which the local name is declared. Some names are always global; other names are always local; some other names are either local or global depending upon specifications in the source element in which the names are declared.
A record-name is global if the GLOBAL clause is specified in the record description entry by which the record-name is declared or, in the case of record description entries in the File Section, if the GLOBAL clause is specified in the file description entry for the file-name associated with the record description entry.
A data-name is global if the GLOBAL clause is specified either in the data description entry by which the data-name is declared or in another entry to which that data description entry is subordinate.
A condition-name declared in a data description entry is global if that entry is subordinate to another entry in which the GLOBAL clause is specified. However, specific rules sometimes prohibit specification of the GLOBAL clause for certain data description, file description, or record description entries.
A file-name is global if the GLOBAL clause is specified in the file description entry for that file-name.
If a data-name, a file-name, or a condition-name declared in a data description entry is not global, the name is local.
Global names are transitive across source elements contained within other source elements.