XT (overlapping term)

= TX (término que solapa a otro en el significado)
Ex: Amongst them can be listed: 'GT' Generic to; 'SA' See also; 'TT' Top term in a hierarchy; 'XT' Overlapping term; 'AT' Associated term; 'CT' Co-ordinate term; 'ST' Synonymous term; and 'SU' See Under.