ZigZag is a compositional scheme used by many famous artists such as Goya Ferdinand and Julien Dupré. ZigZag is similar to the S curve but it has a more sharp look to it.
Examples of ZigZag:
My attempt at ZigZag:
ZigZag by Rob Gallop:
ZigZag by billaday:
ZigZag by Jdn:
All images on this site are from zigzag.gallery.sytes.org except for my attempt at zigzag. All images are licenced for use under Creative Commons license. Some information from jurate.atspace.com.