Visual Mode

Visual mode is used to edit text by selecting them first
Selection can either be done using mouse or using visual commands

v start visual selection, use any movement command to complete selection
- ve, vip, v) etc
V visually select current line
- Vgg, ggVG etc
Ctrl+v visually select column(s)
- Ctrl+v3j2l to select a 4x3 block, etc

d delete the selected text
c clear the selected text and change to Insert mode
- for visually selected column, after c type any text and press Esc key. The typed text will be repeated across all lines
I after selecting with Ctrl+v, press I, type text and press Esc key to replicate text across all lines to left of the selected column
A after selecting with Ctrl+v, press A, type text and press Esc key to replicate text across all lines to right of the selected column
ra replace every character of the selected text with a
: perform Command Line mode editing commands like g,s,!,normal on selected text
J join selected lines with space character in between
gJ join selected lines without any character in between
:h visual-operators for more info

for(;;)
{
for(;;)
{
statements
}
statements
}

for(;;)
{
    for(;;)
    {
        statements
    }
    statements
}

~ invert the case of visually selected text, i.e lowercase becomes uppercase and vice versa
U change visually selected text to UPPERCASE
u change visually selected text to lowercase

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