The grouping-separator attribute gives the separator used as a grouping (e.g. thousands) separator in decimal numbering sequences,
and the optional grouping-size specifies the size (normally 3) of the grouping. For example, grouping-separator="," and grouping-size="3"
would produce numbers of the form 1,000,000. If only one of the grouping-separator and grouping-size attributes is specified,
then it is ignored.
Examples (xslt:xml): Overview 41:9