Use when working with Windows (cmd/PowerShell console, MINGW64, script installation): stdout encoding (cp1251 vs UTF-8, UnicodeEncodeError on ✓/Cyrillic), CRLF/LF when writing files (md5 mirror checks), UTF-8 BOM for PowerShell 5.1, npm.cmd instead of npm, venv Scripts vs bin, PYTHONIOENCODING/PYTHONUTF8, subprocess child output encoding. Verified on Windows 10 bug reports (2 installs + v2.4 BUG-1/4).
