Master intensity, fade all fixtures, that has a intensity channel defined.
See: fixture_creator_lamp_configuration
The fixtures can individually be excused from Master intensity.
This can be done during the Adding fixture see: Adding and Removing Fixtures in FreeStyler

The master intensity panel has a fader and some buttons.



The fader are used to set the light intensity level to a well defined value.

The buttons are used to set the intensity to 0% or 100% by one press.

“Fade In” and “Fade Out” are as the name says used make an intensity change with a time dependency so the light intensity change slowly.
The time is set in the entry-box bellow Fade buttons.