middle mouse channel slider

Select any object or node and left-click on one of its attributes in the channel box, located on the right side of the screen. The attribute name should be highlighted, and should look like this:


the channel rotate x is "selected" by left-clicking on it in the channel box.

Once the channel is selected, move your cursor into the workspace. Hold down the middle mouse button and drag the mouse left and right to slide the channel value up or down. This works for just about any float or integer-based attribute, such as light intensity, deformer envelope, etc.

Try it out!