Tips on VI

Line numbers

Show/hide line numbers

:set number/nonumber

Cut/Copy/Paste

Keys

d: delete (cut)
y: yank (copy)
p/P: paste (after/before)

Split window

Ctrl+w s
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## Filesystem Explorer
```vim
:Explore
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## Sessions
Save a session
```vim
:mksession mysessionfile
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Open a session
```vim
:source mysessionfile
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## Tabs
Open files in tabs:
```vim
vim -p file1 file2 file3

Open new file in tab:

:tabnew filename

Next/Previous tab:

:tabn/tabp