CTRL+LMB on node parameter changes attribute "shaderParam" (white color for "shaderParam == True")
CTRL+RMB toogles parameter provider "primitive"/"internal" (orange color for "primitive")
ALT+LMB parameter toogles detail "uniform/varying" (italic for "varying")
Added ToolButton for show/hide connected parameter in NodeParamView
NodeParamView has tabs for "Input", "Output" parameters