There are several versions of line note forms posted in the Uploaded Forms page. I've found that forms make giving line notes so much faster and easier. The form I use has space for me to jot down the page number, date, character's name, and part of the line that they messed up. I have pre listed the possible mistakes such as, jumped, called, paraphrased, or changed word, and then I circle what they actually did wrong. At the end of the night I simply hand the actor a piece of paper. It's so much easier than trying to verbally explain what they did wrong. And, even though it might sound kind of complicated, I've found using a form to be the quickest way to take notes during rehearsals.