Whats the relationship between the light and the dark speed settings for Raster engraving

Whats the relationship between the light and the dark speed settings for Raster engraving ? I checked the wiki first. I wanted to ask here before I started into Google searching to get the gist of it.

Perfect ! that explained it perfectly, thank you Peter

@David_Cook ​ would you write and explain the process to add it to the wiki?

@Ariel_Yahni_UniKpty absolutely. can probably do it this weekend.

I started to get the data for the Wiki until I realized I needed more material to practice on. I’ll get some material this week and attempt this again next weekend.