The "data" referred to in Document and Data Control, element 4.5, ISO 9000:1994, is intended to be similar to the "documents" mentioned in that element. These data are information that is used to control a process or action. For example, the software that runs an analyzer. Or, the punched tape that runs a robot machine. It is clearly NOT output data from a process, from a test, or spc, etc. But the word is ambiguous, and it is also used to describe information about almost anything, as Ross has mentioned.