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Controls the shoulder seam location on the collar side.

- Increase this option to shift the shoulder seam forward on the collar side
- Decrease this option to shift the shoulder seam backward on the collar side



## Effect of this option on the pattern
![This image shows the effect of this option by superimposing several variants that have a different value for this option](simon_s3collar_sample.svg "Effect of this option on the pattern")