If you have ever created links with target="_new" and wondered why all your pages were opening in the same window, even if was behind the current window, it is because "_new" is not actually a generic target. It is a window name, and by using it, you name the first window that comes up "_new".
Thereafter, every link that specifies target="_new" looks for and finds that window by name, and opens in it.
If you use target="_blank," a brand new window will be created each time, on top of the current window.
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_new can be confusing from the user standpoint. If the "new" window is closed after use, it is not confusing.
_blank can cause a lot of windows to be opened. Deleting the windows is the answer. But if windows are closed after use, then _new works just as nicely.