Hi all. Based on what Peter and Mike have said about new and improved undo code for Beta 3, the following may already be fixed. But just in case.... 1. Type the following text pressing Enter after each item: Apples Oranges Pears 2. Go back and assign the paragraph style to each line. When you view codes, you get this: <para.>Apples</para.> <para.>Oranges</para.> <para.>Pears</para.> 3. Select all and apply the list style to it. That will give you: <list.>Apples[<] Oranges[<] Pears</list.> so far so good. But.... 4. Press Control Z. You'll lose just the opening list style tag: Apples[<] Oranges[<] Pears</list.> 5. Press Control Z again and nothing noticeable happens other than the text becoming unselected. 6. Press Control Z again and you get that code corruption that you sometimes see in 10.5 and that Anita (I think) reported. Here's the text: Apples[<] Oranges[<] Pears[e 7. Press Control Z again, and a lot more goes away. I get: ranges[<] 8. Press Control Z again, and I get nothing noticeable. Control Z after that, and an r appears: ranges[<] r 9. Press it a couple more times and a g appears: ranges[<] rg The r from step 8 perplexed me, but I thought it might be the end of Pear. But where'd the g come from?? 10. Press Control Z a couple more times after that and the text goes completely away (which I would have expected)