Here you control how the particles will be displayed in the viewport.
Visible
Toggle the particles' visibility in the viewport.
Percentage
Determine how many particles you want to display in percent. This parameter does not influence meshing or rendering, and has no effect when instance objects are displayed (see Fluid > Particles > Render Only).
Size
The particles' viewport size is adjusted here – rendering is not affected by this value. Valid settings range from 1 to 100.
Property
Particles will by dyed according to the chosen property with the gradient from “Particle Color”.
Automatic Range
When active a property's minimum and maximum values are calculated by RealFlow | Maya automatically. The colour gradient from → "Particle Color" is adjusted to this range. When disabled you will be able to define your own range, e.g. for enhancing colour contrast. Particles with values smaller than “Min Range” or greater than “Max Range” will be displayed with the same gradient colours.
Min Range
If “Automatic Range” is unchecked you can define a custom value. All particles with values smaller than “Min Range” will be displayed with the same gradient colour.
Max Range
If “Automatic range” is unchecked you can define a custom value. All particles with values greater than “Max Range” will be displayed with the same gradient colour.