;The file userdb.txt is used to store the external signatures.
;External signatures can be modified by the user as and when he requires.
;The signatures are in the format
;The ?? in the signature represent wilcard bytes (they are skipped while scanning)
;ep_only can be either true or false. When true, the signature is scanned for at the EntryPoint only.
;Else it is scanned throughout the file.
;A '*' in the results of PEiD signifies that the external database was used for scanning the file.
