Another line of buttonhole stitches, going from right to left, is then worked into the loops of the preceding line, etc. Only the buttonhole stitches along the edges are passed through the ground material.
The detached buttonhole stitch is also known as the detached buttonhole filling.
Source: EATON, Jan (1986). The Complete Stitch Encyclopedia, Twickenham: Hamlyn, pp. 89, 91.
Digital source of illustration (retrieved 28 January 2017).
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