The direction of slant in a structure (for example, in a twined textile) is reversed in successive slanting elements or groups of elements.

Excerpt from

Ann Rowe, “Technical Glossary for Textiles,” in Andean Art at Dumbarton Oaks, edited by Elizabeth Hill Boone (Washington D.C.: Dumbarton Oaks, 1996): 467-469, from Irene Emery, The Primary Structures of Fabrics (Washington D.C.: The Textile Museum, 1966, 2009): 182, 197, 201, 215.