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    This does the summary describes. I was confused by why you’d need a tool to do this since there’s a setting (which can be found by right-clicking on the task bar and opening the preferences pane) to do this. This was one of the first things I did after installing the update (on OS X I have had my doc corner-aligned for over 15 years but there it requires writing to an undocumented user default). Centering something like a dock / taskbar is a terrible UI decision because in a centred model adding or removing an element moves all of the others. This, in turn, hurts muscle memory. NeXT did the right thing, Apple chose form over function, and it looks like Windows 11 is copying Apple.