Page references for a given entry appear on the same line. Two spaces must follow the entry before the page references to ensure that the end of the entry can be identified. An entry may have multiple page references separated by a single comma. Additional spaces are permitted after the first double space.
Currently only single page numbers (eg. 24) and page ranges (eg. 23-45) are supported. Elided page ranges are not supported.
Page ranges can also have a format specified by enclosing the range in asterisks or underscores. (See Section 1.3).
Example 1-4. Page references
heading 100, 2-3, *45*, _29-12_ ^^ note the double space!