A. Preview window
This will show the tone as specified in your chosen settings.
B. Number of Lines
This specifies the size of the pattern. A larger number makes a smaller pattern. At a small enough size the individual dots appear to merge into a grey pattern.
How dark the pattern is to be. The larger the percentage, the darker the pattern: 100 per cent is pure black.
D. Type of Pattern
The standard is circle, but you can also use diamonds, lines, squares and various other patterns.
The angle of the pattern to repeat.
If you’ve specified the pattern Noise, this sets the size of the Noise.
If you’ve specified the pattern Noise. this determines the distortion factor for it.