| 摘要 |
A computer-readable medium contains software that, when read by a computer, causes the computer to perform a method for tracing a document. The method includes: on the computer, generating a global unique identifier (GUID) for a master document; embedding the GUID in the master document; making a copy of the master document available for viewing on another computer, wherein the copy of the master document includes the embedded GUID; receiving a version verification request from the other computer about the copy, wherein the version verification request includes the GUID from the copy; and providing a latest version of the master document referenced by the GUID from the copy to the second computer in response to the version verification request.
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