-X: Print selected cross-reference information (FWEAVE)

When used with any of the arguments cim, this option is the opposite of -x. See -x.

The option -XI tells FWEAVE to write its index cross-references to a file formatted for input by the makeindex utility. This feature facilitates creation of a master index that spans several individual web files. For more discussion, see Using makeindex.

The construction -XI stands alone; one may not mix the I with the list cim. Also, this option is overridden by -xi, which suppresses output of all index information.