XmlmmCIF equivalent: atom_sites_footnote Data items in the ATOM_SITES_FOOTNOTE category record detailed comments about an atom site or group of atom sites. XmlmmCIF equivalent: atom_sites_footnote/text The text of the footnote. Footnotes are used to describe an atom site or group of atom sites in the ATOM_SITE list. For example, footnotes may be used to indicate atoms for which the electron density is very weak, or atoms for which static disorder has been modeled, among many other possibilities. XmlmmCIF equivalent: atom_sites_footnote/id A code that identifies the footnote.