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Open the drawing. The Document control automatically displays below the drawing.
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Tap Expand
> Layers 
or tap Document 
to expand the control, and then tap Layers . Layers available for the current sheet display in a vertical pane.
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Select the layer to view. When you select a layer, the software displays objects assigned to that layer.
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Clear the layer check box to turn the layer display off. All SmartFrames and objects assigned to that layer are hidden.
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When you have selected the required layers, tap the Back button on the vertical pane, or tap Layers
again in the Document control to close the layer list.