Validate that the document's security classification policy is valid.
Validate that the document doesn't contain any reserved words.
A Para's classification value cannot be more sensitive
than the Document's classification value.
If there is a Para is labeled "top-secret" then the Document
should be labeled top-secret
If there is a Para is labeled "secret" then the Document
should be labeled either secret or top-secret
If there is a Para is labeled "confidential" then the Document
should be labeled either confidential, secret or top-secret
These reserved words are not allowed anywhere in the
document: SCRIPT, FUNCTION.
The document must not contain the words SCRIPT or FUNCTION