Alternates in profile metadata dates

Insert a metaDescribes with predicate="alternate" and value yes when capturing a date that contains two values separated by 'or'.

Alternate dates will contain 'or' in between the two date options. These date options must be captured in metaItem with about='dates', where the earlier date option is captured in metaDescribes with predicate='isoStart' and the later date option is captured in metaDescribes with predicate='isoEnd'. If alternate dates include three or more distinct dates, or has a mix of single dates and ranges capture the first possible date in metaDescribes with predicate='isoStart' and the last possible date in metaDescribes with predicate='isoEnd'.

Example of an 'alternate' date

1780 or 1782-3


      <metaItem about="dates">
        <metaDescribes predicate="isoStart">1780</metaDescribes>
        <metaDescribes predicate="isoEnd">1783</metaDescribes>
        <metaDescribes predicate="alternate">yes</metaDescribes>
      </metaItem>