channel header cells

The cells immediately to the right of the ID cell are known as channel header cells. Each header identifies the type of data contained in its column. The data for a channel appears directly below its header.

Channel headers also provide visual indicators of the channel's current status:

• Black triangle in the top-left corner:
  Indicates the channel is read-only and cannot be modified.

• Red line at the bottom:
  Indicates the channel has been re-sampled to align with another channel currently displayed.

• Blue line at the bottom:
  Marks the channel as the Master Sample, used to synchronize the fiducial rate of other channels.

• Small rectangles on the right side displaying "x", "y", "z":
  Identifies the current X, Y, and Z coordinate channels.