vim: how to specify arrow keys

In vim, when using map commands you must specify keys. For example <CR> <ESC> <F1>. What are the corresponding ones for the arrow keys?

Solution 1:

If you don't know the internal code for a certain key, type CtrlK and then the function key. For example, this sequence followed by the up arrow key will output:

<Up>

You can learn more about this command in the documentation for both insert and command mode. The specific ways to map a special key are given in the documentation with the tag :map-special-keys. Additionally, you can find a handy table with :h key-notation.

Solution 2:

Quite literal:

<Left>
<Right>
<Up>
<Down>

As noted in the comments, find this and more in this tutorial.