The [^N] marker number that CITES value, so a resolve can preserve the right
source when it moves a value into History. By the citation-after-claim
convention the marker follows the claim, so we take the FIRST marker at/after the
value's first occurrence; failing that, the nearest marker before it. Returns
null when value carries no nearby marker. Pure.
The
[^N]marker number that CITESvalue, so a resolve can preserve the right source when it moves a value into History. By the citation-after-claim convention the marker follows the claim, so we take the FIRST marker at/after the value's first occurrence; failing that, the nearest marker before it. Returns null whenvaluecarries no nearby marker. Pure.