The suite is intended to protect both classified and unclassified national security systems and information. It was available in both classified and unclassified versions. However, there are pros and cons to both classified and unclassified choropleth maps. Only (U//FOUO) is considered between Unclassified and Confidential and may deal with employee data. Government documents without a classification may be marked as UNCLASSIFIED or NOT PROTECTIVELY MARKED. The memo itself questions the legality of retroactively classifying unclassified images. The spelling alphabet is now also defined in other unclassified international military documents. Results below grade F are designated as unclassified (UNCL). In September 1945, the LNER assigned it the classification EM1; previously it had been unclassified. This genetic material may refer to genetic material produced by unclassified microorganisms. Biological dark matter is an informal term for unclassified or poorly understood genetic material. It also includes language isolates, unclassified languages and other types. In addition, there are a number of unclassified species and genera. Pentazocine was originally unclassified under the Controlled Substances Act. A number of as yet unclassified Hepatitis B like species have been isolated from bats.