The General toolbar contains buttons for file management (Import, Export) and for general editing/viewing of the canvas content (Clear, Undo/Redo, Cut/Copy/Paste, Zoom, Mirror, Clean, and View Settings).
Elements of the General toolbar:
![Clear](clear.png)
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Clear
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Clear the whole canvas without saving its content.
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![Open](open.png)
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Import
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Load an already existing file into Marvin for JavaScript. The supported file types are MDL Molfiles V2000 (.mol extension) and ChemAxon Marvin Documents (.mrv extension).
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![Save](save.png)
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Export
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Save your structures in one of the following file formats: MDL Molfiles V2000 (.mol extension) or ChemAxon Marvin Documents (.mrv extension).
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![Undo](undo.png)
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Undo
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Revert the last commands you applied.
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![Redo](redo.png)
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Redo
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Revert the effect of the last "Undo" command.
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![Cut](cut.png)
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Cut
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Place the selection on the clipboard, while removing the original structure from the canvas.
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![Copy](copy.png)
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Copy
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Place the selection on the clipboard, while leaving the original structure unchanged.
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![Paste](paste.png)
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Paste
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Insert the content of the clipboard onto the canvas.
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![Zoom in](zoom%20in.png)
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Zoom in
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Increase the zoom ratio.
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![Zoom out](zoom%20out.png)
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Zoom out
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Decrease the zoom ratio.
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![Zoom All](zoom%20all.png)
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Zoom All
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Change the zoom ratio to the optimal value to view everything on the canvas.
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![Mirror horizontally](mirror%20horizontally.png)
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Mirror Horizontally
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Mirror the selected molecule or fragment horizontally.
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![Mirror vertically](mirror%20vertically.png)
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Mirror Vertically
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Mirror the selected molecule or fragment vertically.
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![Clean 2D](clean%202d.png)
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Clean
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Clean the structure(s) on the canvas in 2D by recalculating the atomic coordinates.
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![View Settings](view%20settings.png)
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View Settings
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Set display properties in the View Settings dialog box.
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![Help](help.png)
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About Marvin JS
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Displays information about the application (name, version) and a link to the Users Manual.
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