Note that the definition is somewhat ambiguous because the user of a program can be another program and, if the latter is a portion of the set of program that is required to be interoperable, it might well be that it does need to have knowledge of the characteristics of other units.
注意，该定义有些含糊不清，因为一个程序的用户可以是另一个程序；而且，如果后者是那套被要求具备互操作性的程序的一部分，那么，很可能它就需要了解其他单元的特性。