Card weaving

You can find patterns here: https://mimbles.files.wordpress.com/2021/01/abfce-tablet-weaving-patterns.pdf

Also they use the Z or S appelation.
Z is enter from the right (back), exit to the left
S is enter from the left (fton), exit to the right

(using the central section of those letters help, some use / \ instead)
The Z's middle section forms a /
The S's middle section forms a \

You can undo the twist build-up by other means than changing the card direction. Some people devise a detachable system, use dangling weights or fishing line swivels.