Analysis ToolPak's Regression tool should not use the clipboard
After you run the Analysis ToolPak's Regression tool, you can paste some of the numbers that appear in the output. There is no warning that the Analysis ToolPak will use/clear the clipboard. Users may have had important stuff on the clipboard. It is also bad practice to use the clipboard as part of a macro. Please change the Regression tool so that it does not use the clipboard.