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This paragraph gives an explanation about what shiftAction is and how to use it.
'Tag' sets a reference date as a 'recorddatetime'-tag in the XML-file. This reference date is ALWAYS today's date.
'Shift' zorgt ervoor, op basis van de referentiedatum, alle andere datums in het XML-bestand worden aangepast.
Voorbeeld:
tag_and_no_shift
shift_and_tag
no_tag_and_no_shit
