Controls how long to make the neckband, as a percentage of the circumference of the neckline.
Too large a value will make for a loose neckband that doesn’t hold its shape properly, while too small a value will cause the fabric around the neckband to be gathered.
Materials that stretch more easily should use smaller values. 80-85% is a reasonable value when using swim fabric, and 75% is a reasonable value for rib knit.
Note: This option is only available if the ‘neck style’ option is set to ‘neckband.’