Will change short description on coordinateSystem element from: Numbering used for sequence (0-based or 1-based) to: Base number of coordinate system (0 for 0-based numbering or coordinates, inclusive start, exclusive end, 1 for 1-based numbering, inclusive start, inclusive end) and definition will be changed as: Whether the sequence is numbered starting at 0 (0-based numbering or coordinates, inclusive start, exclusive end) or starting at 1 (1-based numbering, inclusive start and inclusive end). https://bcl-lab.github.io/FHIR_CG_web/sequence-definitions.html#Sequence.coordinateSystem