The channel data displayed in YT Window includes 2 types: Active and
Inactive.
The active channel is drawn with thicker line than other Inactive channels.
Moreover, the channel information shown in Property Viewer is the information
of current active channel.
On the right side of YT Window, the labels are shown in which the names
of channels are displayed.
When the channel is activated, its label’s background color changes to
the color of its line.
The background color of label is background color of graph when the channel
is Inactive.
The current active channel can be switch over by clicking the rectangle
of label.
Switch Over by Click