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You can choose between normal warning and error messages, and expert style notifications.
Node list icon size
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Size
With entries of the drop-down menu it is possible to determine the size of the icons in the “Nodes” tree.
Window Position (OS X only)
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Keep windows on top
When this option is unchecked, all non-modal windows will be moved behind RealFlow's main GUI making it difficult to access them again. To avoid this behaviour, this checkbox should be active. A non-modal window, by the way, is a panel that allows you to access other, underlying windows, e.g. “Node Params” or the viewport. Examples for modal windows are “Export Central” and the “Scripted” daemon's Python editor.
Undo
Enabled
The checkbox enables/disables RealFlow’s undo function.
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