/// This is the Thai encoding for Windows. It is an extension of TIS-620 / ISO-8859-11.
///
/// [Index visualization](https://encoding.spec.whatwg.org/windows-874.html),
/// [Visualization of BMP coverage](https://encoding.spec.whatwg.org/windows-874-bmp.html)
///
/// This encoding matches the Windows code page 874, except Windows decodes
/// unassigned code points to the Private Use Area of Unicode.
