16. The computer readable storage medium of claim 15 , wherein the computer readable storage medium further includes: executable computer code to determine whether executable text in the document has been derived from, affected by, or derived from and affected by the untrusted text marked in the document; and executable computer code to identify the executable text as untrusted text not trusted or not fully trusted when the determining determines that the executable text has been derived from, affected by, or derived from and affected by untrusted text in the document.
17. The computer readable storage medium of claim 16 , wherein the executable computer code to mark the text is provided as a executable computer code for a first application or process, the executable computer code for the determining and identifying is provided as a executable computer code for a first application or process, and the first and second applications or processes are operable on the same computing system, computing device, or computing system and computing device.