Duerkopp Adler 559 Operating Instructions Manual page 28

Menu item Description
190 Round tack adjustments
191 Number of stitches in the round tack: from 6 to 12 stitches can be set in the round
tack.
192 Throw width in the round tack: the throw width (stitch width) for the whole buttonhole
(see menu item 150) can be reduced in the taper tack.
193 Seam end position (1 = in the tack, 2 = within the lip)
194 Overlapping in the round tack: overlapping of the seam beginning and the seam end.
195 Seam beginning within the lip (0% = eye)
200 Speed: sewing speed (stitches per minute)
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