Re the markings, I don’t usually use notes when I preach. I compress the 4-5 pages down into a one page outline with the main structure of the sermon. The highlights are marking the main headings and the subheadings. The letters are the first letter of the key words in each sentence. I use that one page outline to help me memorize/heartize the overall structure and content of the sermon. It’s not a word for word memorizing – that’s impossible. But if I have a good grasp of the structure and the sermon preparation process is fresh in my mind, I can usually get a fair correspondence between what I’ve prepared and what I say. I find that method helps me to be more verbal than written in style. I started doing this 20 years ago and the mental muscles do grow and make it easier than it was at first. Sometimes if I have a more complicated sermon, I do take an outline of the complicated section into the pulpit just in case I forget or get mixed up. Hope that helps.