Class: E37.Mark

comment: "This class comprises symbols, signs, signatures or short texts applied to instances of E24 Physical Man-Made Thing by arbitrary techniques in order to indicate the creator, owner, dedications, purpose, etc. This class specifically excludes features that have no semantic significance, such as scratches or tool marks. These should be documented as instances of E25 Man-Made Feature. Examples: Minoan double axe mark, the "copyright sign", the smiley symbol." (string)

http://erlangen-crm.org/100302/E37.Mark