Along with finding any individual stitch, Magic Markers can also find wide sts such as cable stitches. Show Me

1. Tap Edit. Show Me
2. Tap Magic Markers. Show Me
3. Tap the Blue+ and select Magic Marker. Show Me
4. Tap a sample stitch that is part of the cable.
5. Drag the edges of the sample to cover the entire width of the cable.
6. Tap the Wand and it will find all the matching cables.

For more information about adding a stitch, see here.