A word about split blocks -

 

Warp pattern threads that are located between ground blocks are able to create the sides of boxes or square corners when interacting with appropriately placed weft pattern threads.

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However, warp pattern threads that split ground blocks provide the design potential to create figures in which the warp and weft pattern threads cross each other or intersect away from the the ends of the floats. These mid-float intersections are a useful way to tie down otherwise unstable pattern floats in addition to being a powerful design feature.

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One of the most common patterns produced by a split block warp is the 10-stitch, which resembles the character for the number 10  ( 十) pronounced "ju". Pattern names including "10-stitch" will contain the ju element.