MIDI : MIDI Editors : Track List : Track List Columns

Track List Columns
In MIDI Editor windows there are four columns for the Track List:
Show/Hide
Indicates which tracks are shown or hidden in the MIDI Editor window.
Track Color
Displays the track color for each track by type or by track.
Name
Displays the name for each track.
Pencil
Lets you enable a track for manually entering MIDI notes with the Pencil tool.