Six variable channels exist for the DCP 2 secondary, these are selected
using the R, G, B, Y, C
and M keys. The hue, saturation and luminance within the selected
vector can be adjusted using the three controls on the upper left hand
side of the DCP panel. Additionally the R, G and B channels have full
primary control. Primary control is available when the balls are
orange. As an aid, the MASK button on the DCP panel will desaturate all
parts of picture that are not within the current isolation.
Additionally in mask if a region has been set, then its boundaries will
be visible.

DCP 2 primary controls are available when all the balls are orange. If
any balls are green, then press and hold the switch above the lower
ball until they change. If the balls are now red then press the 2 key
on the DCP panel. Now the balls will be orange. Lift gamma and gain
controls are now available. These controls will affect isolated picture
areas. Press and hold on one of the primary reset buttons to default
the primary for that channel. The isolation depends on colour and area
selection. This will be described later.
Press and hold on one of the primary buttons, to default the primary, and press and hold the appropriate channel selection button to default the secondary hue, sat and lum. The vector position, or hue, can be rotated through 360 degrees using the top control on the right of the DCP panel. The vector width can be altered from 0 to 360 degrees using the second control on the right of the DCP panel. The threshold of lowest saturation that is included in the isolation is set using the third control on the right of the DCP panel. The threshold of highest saturation that is included in the isolation, is set using the fourth control on the right of the DCP panel. The threshold of lowest luminance that is included in the isolation, is set using the fifth control on the right of the DCP panel. The threshold of highest luminance that is included in the isolation is set using the sixth control on the right of the DCP panel.....More......