<P> Special signature machines, called autopens, are capable of automatically reproducing an individual's signature . These are typically used by people required to sign a lot of printed matter, such as celebrities, heads of state or CEOs . More recently, Members of Congress in the United States have begun having their signature made into a TrueType font file . This allows staff members in the Congressman's office to easily reproduce it on correspondence, legislation, and official documents . In the East Asian languages of Chinese, Japanese, and Korean, people traditionally use stamp - like objects known as name - seals with the name carved in tensho script (seal script) in lieu of a handwritten signature . </P> <P> Some government agencies require that professional persons or official reviewers sign originals and all copies of originals to authenticate that they personally viewed the content . In the United States this is prevalent with architectural and construction plans . Its intent is to prevent mistakes or fraud but the practice is not known to be effective . </P> <P> In e-mail and newsgroup usage, another type of signature exists which is independent of one's language . Users can set one or more lines of custom text known as a signature block to be automatically appended to their messages . This text usually includes a name, contact information, and sometimes quotations and ASCII art . A shortened form of a signature block, only including one's name, often with some distinguishing prefix, can be used to simply indicate the end of a post or response . Some web sites also allow graphics to be used . Note, however, that this type of signature is not related to electronic signatures or digital signatures, which are more technical in nature and not directly understandable by humans . On Wikipedia, an online wiki - based encyclopedia edited by volunteers, the contributors "sign" their comments on talk pages with their username (only the username holder has the right to digitally affix their signature). </P> <Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table>

Does your signature have to be in english