The Timeline, Mixer and Control windows are always open. This menu enables the optional windows.

Subgroups Window. This window contains the level controls for tracks that are assigned to one of the four subgroups. Subgroups are used when you want to work with two or more tracks as a group. For example, you may have several drum tracks. Putting them all in the same subgroup allows you to raise or lower the volume level of the drums as a whole, while you can still adjust individual drum tracks with the main mixer sliders.

The subgroup sliders further reduce the level settings of the faders in the individual track modules in the mixer. There are also solo and mute buttons affecting all tracks in a subgroup.

Aux Returns Window. Contains level controls and setups for up to four real time effects which are shared by two or more tracks. The corresponding sends are in the expansion modules on each track in the mixer.

Sample List window. Contains a list of all the sample files used in the project. A sample file can be shared by any number of projects. Right clicking on the name of a sample brings up a menu of things you can do to a sample. Some of these will change the file on disk.