# Constants
*bots.Feedback.
chan *image.RGBA, chan *image.RGBA, chan string.
*developer.SourceLine.
nil.
bool.
notifications.Notify.
plugging.PortID, plugging.PeripheralID.
nil.
[optional] filename.
govern.Mode.
# Interfaces
GUI defines the operations that can be performed on visual user interfaces.
# Type aliases
FeatureReq is used to request the setting of a gui attribute eg.
FeatureReqData represents the information associated with a FeatureReq.