number-columns-repeated

The repetition of a table-column specification n times; with the same effect as if the fo:table-column formatting object had been repeated n times in the result tree. The "column-number" property, for all but the first, is the column-number of the previous one plus its value of the "number-columns-spanned" property.

See http://www.w3.org/TR/xsl11/#number-columns-repeated.