I have a system of highlighting that I have used for several years now that helps me. It’s a free country, so you, of course, can do what you want (except Democrats or Communists do appear to control the choice of highlighter colors; you really can’t get anything but the standard eight). Just take my model as a suggestion, then, a starting point.
Briefly, I use yellow for anything that strikes me. I use pink for ordinals—first point, second point, third point, etc. The yellow helps me see what’s valuable when I flip through the book later. The pink orients me to the flow of the argument both later and even while I read.
I started doing something similar in Logos 4, setting up my own set of highlighter pens along with my own keyboard shortcuts (see at left)—which was a keystroke of genius on Logos’ part. I don’t like using any highlights that cause the leading (the space between lines) to increase, so I eliminated them all and even created a few of my own styles.
But I found I was still lacking one of the most important portions of my highlighting system. I needed at times to write 1, 2, 3, 4, etc. in front of pink outline points.
I came to realize that Logos 4 can do just this, and I created my own highlighter pens to do it. You can see them in the screen shot.
Now I can highlight lists like the other screenshot. My special pens add a 0., 1., 2., etc. in front of whatever text I have selected to highlight.
Good work, Logos.
Update: A reader asked how to do this. Right click inside the highlight window, choose “Create a new palette.” Name the palette. Now right click inside it and click “Create style.” Then mimic what I did below. (If I did not expand an arrow, then there’s nothing to do under that arrow.)