## Used hotkeys

The following tables list the base keys, i.e. a key without any modifier, and
their combination with the modifier keys (Alt: `!`, Ctrl: `^`, LWin: `#` and
Shift: `+`), which are used in bug.n. With this overview you may find unused
keys, which can be used for non-bug.n hotkeys or to reassign bug.n functions.

| Base key  | `#` | `#+` | `#^` | `#+^` | `!` | `!+` |
| --------- | --- | ---- | ---- | ----- | --- | ---- |
| Down      | x   | x    | x    |       | x   |      |
| Up        | x   | x    | x    |       | x   |      |
| Left      | x   | x    | x    |       |     |      |
| Right     | x   | x    | x    |       |     |      |
| Backspace | x   |      | x    |       | x   |      |
| Enter     |     | x    | x    |       |     | x    |
| Space     | x   | x    |      |       |     |      |
| Tab       | x   |      | x    | x     |     |      |

| Base key  | `#` | `#+` | `#^` | `#+^` | `!` | `!+` |
| --------- | --- | ---- | ---- | ----- | --- | ---- |
| .         | x   | x    |      | x     |     |      |
| ,         | x   | x    |      | x     |     |      |
| -         |     |      |      |       |     |      |
There are not many special character keys, which are on both keyboards, US and DE.

| Base key  | `#` | `#+` | `#^` | `#+^` | `!` | `!+` |
| --------- | --- | ---- | ---- | ----- | --- | ---- |
| c         | x   |      |      |       |     |      |
| d         |     | x    | x    | x     |     |      |
| e         |     |      | x    |       |     |      |
| f         | x   | x    |      |       |     |      |
| h         |     |      | x    |       |     |      |
| i         | x   | x    | x    | x     |     |      |
| m         | x   | x    | x    |       |     |      |
| n         |     | x    |      |       |     |      |
| q         |     |      | x    |       |     |      |
| r         |     |      | x    |       |     |      |
| s         |     | x    | x    |       |     |      |
| t         | x   |      | x    |       |     |      |
| x         |     | x    |      |       |     |      |
| y         | x   | x    |      |       |     | x    |
Any letter key, which is not listed in this table, is not used.

| Base key  | `#` | `#+` | `#^` | `#+^` | `!` | `!+` |
| --------- | --- | ---- | ---- | ----- | --- | ---- |
| 0         |     | x    |      |       | x   |      |
| 1         | x   | x    | x    |       | x   |      |
| 2         | x   | x    | x    |       | x   |      |
| 3         | x   | x    | x    |       | x   |      |
| 4         | x   | x    | x    |       | x   |      |
| 5         | x   | x    | x    |       | x   |      |
| 6         | x   | x    | x    |       | x   |      |
| 7         | x   | x    | x    |       | x   |      |
| 8         | x   | x    | x    |       | x   |      |
| 9         | x   | x    | x    |       | x   |      |