 The learning objectives are in the instructions to them and then they're in, you know, the textbook will say, by the end of this section you will have learned X, Y and Z. And so learning objective X, tag it when you find the answer. And students, students either love tags or they hate tags. And those who love them then found the power of going through and sorting their tags for their groups tags. At the end for, for study purposes because for the microbiology students I've started letting them use their annotation notes when they take their exam. And then it's a, then it's a powerful way for them to build their own study guide without me having to spoon here.