Grass Valley Maestro Master Control v.2.4.0 - Manual (Page 361)

357 MAESTRO — User Manual
Section 6 — Visualization Tools
Figure 258. AUX- CH1- Border Color
5. Adjust the slider for the Softness of the border from sharp to very soft.
In the example in
Figure 259 , the softness has been adjusted to .5. If the
Same softness for all sides check box is selected, the Right, Top, and Bottom
sliders will be grayed out and any changes made to the Left slider will
be applied to the other softness settings.
The border is then applied.