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Here you can specify a node's viewport colour. A click on the colour field opens your operating system's colour browser, a click on “+” shows → RGBA/HSV sliders.
File <-> Curve
Imported objects from SD files are locked by default and it is not possible to change their position, scale, or rotation. To unlock an object, click on this button. Motion data from animated objects will be baked into keys.
Notes
It is possible to add node-specific notes here. Simply enter or copy/paste the text. With “+” you can expand the text field.