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Element: <number>

attributes: level, count, from, value, format, lang, letter-value, grouping-separator, grouping-size
Standard excerpt:
The xsl:number element is used to insert a formatted number into the result tree. The number to be inserted may be specified by an expression. The value attribute contains an expression. The expression is evaluated and the resulting object is converted to a number as if by a call to the number function. If no value attribute is specified, then the xsl:number element inserts a number based on the position of the current node in the source tree. Examples (xslt:xml): Overview
36:8 37:8 38:8 39:9 40:8 41:9 59:13

Interactive xlab: [number formatting]