ZBrush ZModeler Edge Actions - Edge Stitch

The all-in-one digital sculpting solution, designed for the pursuit
of art. See for yourself how ZBrush is the perfect application for all artists, from hobbyists
to professionals.

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This feature gives you the ability to stitch holes based on edge selection, and change topology as needed.

[artistryartistry]

Wait, but what if I just want a square where a square is missing instead of having it replace with that bizarre shape?