/// This is the Baltic encoding for Windows.
///
/// [Index visualization](https://encoding.spec.whatwg.org/windows-1257.html),
/// [Visualization of BMP coverage](https://encoding.spec.whatwg.org/windows-1257-bmp.html)
///
/// This encoding matches the Windows code page 1257, except Windows decodes
/// unassigned code points to the Private Use Area of Unicode.