The source is a VMS descriptor specifying a value from the external routine, which GT.M stores at the specified global node. The GTM$PUT function, which adds or replaces data in the database or the local symbol table, requires specification of a source.

The descriptor specifies the data type of the value. GT.M has read-only access to the source. A subsequent section a??Data Types and Descriptorsa??, provides the legal combinations of the class and data types of the destination descriptor.

Example:

	gtm$put(GTMI$_GLOBAL, &data, &gname, &subscript)
	

This specifies GTMI$_GLOBAL as the mode and data as the source. The descriptor gname specifies a global name and the descriptor subscript specifies the first and only subscript level.