Dot spacing settings for lines
When you right click on one of the line tools at the toolbox this dialog defines the dot mode for all
tools using lines, circles, rectangles.
Continuous is the default setting and does not create any
space between single dots, but connects them by a line.
Dot every Nth Pixel draws a brush dot after leaving a space of N pixels.
N total Dots draws a line that exactly consists of N brush dots.
N defines the value needed for the last two modes.