::os::in ENUM Key {}

A keyboard key enumeration.
The keys are named and might not have the same positions on all keyboards.
If a key is not present any major keyboard layout, it is not given a name.
Conversely, these keys are virtually guaranteed to be present on full-sized keyboards of any common layout.
All other keys have to be referred to by their scan code.

- `a`-`z`: The alphabet keys.
- `row0`-`row9`: The number key row.
- `num0`-`num9`: The number block number keys.
- `numDiv`: The number block `/` key.
- `numMul`: The number block `*` key.
- `numAdd`: The number block `+` key.
- `numSub`: The number block `-` key.
- `enter`: The number block enter key.
- `decimal`: The number block decimal separator key.
- `escape`: The escape key.
- `f1`-`f25`: The F-row of keys (usually, only 1-12 are present).
- `leftShift`, `rightShift`: The shift keys.
- `leftControl`, `rightControl`: The control keys.
- `leftAlt`, `rightAlt`: The alt keys.
- `leftSuper`, `rightSuper`: The super keys ("windows").
- `context`: The context/menu key.
- `comma`: The `,` key.
- `dot`: The `.` key.
- `dash`: The `-` key.
- `tab`: The tabulator key.
- `space`: The space key.
- `backspace`: The back-space key.
- `delete`: The delete key.
- `insert`: The insert key.
- `left`, `right`, `up`, `down`: The arrow keys.
- `pageUp`, `pageDown`: Page scroll keys.
- `home`, `end`: The text navigation keys.
- `capsLock`: The caps lock key.
- `scrollLock`: The scroll lock key.
- `numLock`: The number block lock key.
- `printScreen`: The print screen key.
- `pause`: The pause key.