/*title_start*/Q: How do layers work?/*title_end*/

/*text_start*/\C020202A: \C484848You may be familiar with layers in painting programs -- separate canvases which are stacked atop one another as if painted on clear film -- ZBrush adds another dimension!

Each layer is like a separate ZBrush canvas, which means it also contains depth. Rather than merely stacking layers atop one another, each layer exists separately in the same 3D space. For example, you might have a ship on one layer, and a bottle on another ... in the ZBrush canvas, the ship is 'inside' the bottle. You can move the ship's layer forward or backward within the \C020202Layer\C484848 palette, and it remains 'inside' the bottle on the canvas.

Layers can be turned on or off, created and removed, or merged together, using controls in the \C020202Layer\C484848 palette. To select a layer (making it the 'active' layer), click its icon in the palette. To turn off the active layer, click it again so it dims, and select another layer. To merge two layers, move one layer forward or backward (using the \C020202<<\C484848 and \C020202>>\C484848 buttons) so its icon appears next to the icon for the layer you intend to merge it with, then press the \C020202Merge\C484848 button.

Layers can be moved in any of the X, Y or Z axes using the \C020202Displace\C484848 buttons. In addition, they can be moved horizontally or vertically by holding the tilde (\C020202~\C484848) key and dragging. If \C020202Wrap\C484848 mode is enabled when moving horizontally or vertically, the layer 'scrolls' -- items which slip off one edge reappear on the opposite edge.

Certain features, such as \C020202Fill\C484848 and \C020202Clear\C484848 are applied to the active layer rather than the entire document, so other layers remain unchanged.
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