Text Edit MD 0.9.3 — KW Mackey

Portable ZIP: extract the whole folder, then open Text Edit MD.exe.
Installer: open Text Edit MD from the Start menu after setup.

Keep program files together. Your documents stay local.
Ctrl+Shift+V pastes as a new document; Ctrl+P opens print layout.
The desktop app is free. See THIRD-PARTY-NOTICES.txt for software credits.
