Notepad++ is an editor that is thousands of times stronger than Notepad and also loves Taiwan. It has good support for Unicode and the author is a Taiwanese person in France, so this software also has a friendly Chinese interface that is incomparable to other poorly translated software. The biggest point is that it is free!
It seems that there is no unified Chinese translation for Column mode. It is usually referred to as vertical selection or column editing mode. Simply put, in normal document editing situations, the selection function is horizontal from left to right, which is related to the English writing habit. These types of text editors do not have the option to choose between horizontal or vertical writing formats, they are all horizontal. The so-called column mode means that you can select and edit vertically, while the direction of the text and paragraphs is horizontal. That's what it means.
Unfortunately, this function that is rarely used came in handy today. Switching Notepad++ to column mode is very simple, just hold down the Alt key and then make the selection.
Mr. Hou, the author of Notepad++, not only provides us with such a useful software for free, but also opens up the source code. It is truly a kind-hearted act.