| Commands | |
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 It displays on screen the whole content of the drawing  | |
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 It magnifies the current view - Zoom in.  | |
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 It adapts the Zoom to the original background Raster image, if existing.  | |
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 It shrinks the current view - Zoom out.  | |
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 It goes back to the previous view.  | |
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 It magnifies the current view in a new window.  | |
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 It regenerates the current drawing.  | |
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 It specifies a new Zoom factor  |