What does insert on the keyboard mean?

insert, translated as insert, embed; the insert key on the keyboard is an insert override key, used to switch input modes.

The insert key is an insert key on the computer keyboard. It is mainly used to switch text input modes in word processors. There are two text input modes:

1. Overwrite mode, the newly entered word at the cursor position will replace the original word;

2. Insert mode, the newly entered word is inserted into the cursor position , the original characters are moved back accordingly. In early computer terminals, if in overlay mode, the cursor would become a square instead of the usual vertical line.

When the mouse clicks on the input box, a flashing cursor will appear. Under normal circumstances, the Windows system inserts characters at the default cursor position, and the cursor moves backward, that is, the characters behind the cursor are not affected during input. However, Insert is embedded, that is, inserted and overwritten, so when the Insert key is pressed and then entered, the character behind the cursor will be erased, that is, replaced by the currently input character. After pressing it again, it will return to the default insertion state.

Example:

"|" is represented as the cursor, with the following text:

ab|cd

In insert mode, after entering "ach", The above will change to "abachcd" with "ach" inserted.

In insert overlay mode (after pressing the Insert key), after inputting "ach", the above will change to "abach", that is, the system ignores the content after the cursor and replaces it. covered.

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