Magnify Brush
From ZBrush Info
The Magnify brush moves vertices away from the cursor, and optionally displaces them up or down; it's the inverse of the Pinch Brush. The name comes from the appearance of vertices as you move the brush around using the DragDot stroke; the vertices literally look as if they are being magnified.
The magnifying (pushing out) and displacement (pushing up) effects can be controlled separately. For example, to 'expand out' the vertices in part of plane, without offsetting the surface, set the Magnify value to 0, and Z Intensity to a satisfactorily high value.
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Magnify Controls
Magnify: When the magnify button/slider is selected, sculpting will cause a displacement to the surface, at the same time that vertices are pushed outward along the surface. A value of 0 will not change the surface elevation, but points will still be pushed outward along the surface. The slider intensity determines how much vertices are pushed outward from the surface.
The standard Z Intensity setting controls the magnitude of the magnification effect.
The standard Z Intensity setting controls the magnitude of the magnification effect.
