The Add to Channel List dialog provides some options for adding channels to the channel list from a specific node. By adding a channel to the channel list, you are making it available for viewing/editing in the timeline, animation editor, and channel list.
Include Inputs
Turning on this option will add all channels found on all of the nodes that are directly or indirectly wired to the input of the selected node.
Include Outputs
Turning on this option will add all channels found on all of the nodes that are directly or indirectly wired to the output of the selected node.
Include Descendants
Turning on this option will add all channels found on all of the nodes that are contained inside the selected node.
Include Both Constant and Animated Channels
Selecting this option will allow both constant and animated channels to be added.
An animated channel has values that differ across time. A constant channel has the same value across time.
Include Only Animated Channels
Selecting this option will only allow channels which have values that differ across time to be added.
Include Only Constant Channels
Selecting this option will only allow channels which have the same values across time to be added.
Include Only Channels with Non-Integer Keyframes
Turning on this option will only add channels that have keys at non-integer frames.