  We show that proper control of magnetization textures can be achieved in
noncollinear antiferromagnets. This opens the versatile toolbox of domain-wall
manipulation in the context of a different family of materials. In this way, we
show that noncollinear antiferromagnets are a good prospect for applications in
the context of antiferromagnetic spintronics. As in many noncollinear
antiferromagnets, the order parameter field takes values in SO(3). By
performing a gradient expansion in the energy functional we derive an effective
theory that accounts for the physics of the magnetization of long-wavelength
excitations. We apply our formalism to static and dynamic textures such as
domain walls and localized oscillations, and identify topologically protected
textures that are spatially localized. Our results are applicable to the
exchange-bias materials Mn3X, with X = Ir, Rh, Pt.
