The insertion mode of VIM basic learning

Insert mode
1. Character encoding, inserting special characters

<c-v>{3 bit}

If you want to enter a, you can enter it in the input mode
<c-v>065 (must be 3-bit)

<c-v>u{4 bit}

For example, if you want to enter ¿, you can enter it in the input mode
<c-v>u00bf

<c-v>{non-numeric}

Literal inserting non-numeric characters
<C-v> G is getting g.

<c-k>{non-digit} {non-numeric}

Two characters to merge
For example, if you want to ½, you can use the following method
<C-k> 12


So how do we look at the encoding of a character?
You can put the cursor on this character, and then GA
You'll see the information at the bottom of the screen.

2. Replace

R (GR)- Replace single character GR-enter replacement mode until you manually end the replacement mode

For example
AAA BBB CCC
If the cursor is on the first C, then normal mode you r B. The first C becomes B and returns back to normal mode.
In the same situation, if you choose GR, you will find that you can always type in, and the new input will overwrite the old one.
It's actually the equivalent of omitting the removal steps.

The insertion mode of VIM basic learning