<p>It should be trivial, and it might even be in the help, but I can't figure out how to navigate it. How do I indent multiple lines quickly in vi?</p>

Use the
>
command. To indent five lines,
5
>
>
. To mark a block of lines and indent it,
V
j
j
>
to indent three lines (Vim only). To indent a curly-braces block, put your cursor on one of the curly braces and use
>
%
or from anywhere inside block use
>
i
B
.
If you’re copying blocks of text around and need to align the indent of a block in its new location, use
]
p
instead of just
p
. This aligns the pasted block with the surrounding text.
Also, the
```
shiftwidth
```
setting allows you to control how many spaces to indent.