English is a two-pane IDE. On the left you write what you want in plain English; on the right an LLM keeps a working translation in your chosen language — Arduino C++, MicroPython or CircuitPython for the Raspberry Pi Pico, or MicroPython for the BBC micro:bit. Click any line on either side and the matching region on the other side lights up, with a ribbon linking them; click a line in the code pane to also drop a one-line gloss of what it does right below it, with an explain button for a fuller plain-English sentence. You can Upload the result to a connected board over Web Serial and watch it with the Serial Monitor; Arduino C++ can also be Verify-compiled in the cloud first.

Buttons

• Translate (⌘↵ / Ctrl-↵) — re-runs the translation now. It also runs automatically a few seconds after you stop editing (and never while a translation is still in flight).
• Verify — compile the generated C++ only. Needs the internet, not a board. (Arduino C++ target only.)
• Upload — Arduino: compile then flash it over Web Serial. Pico / micro:bit: save it to the board as main.py (MicroPython) or onto the CIRCUITPY drive as code.py (CircuitPython) and restart it. Python boards need MicroPython or CircuitPython installed once first.
• Open Serial Monitor — opens the port and streams whatever the program prints (Serial.print() on an Arduino, print() in Python).
• Examples (⌘K / Ctrl-K) — load one of the bundled English programs.

Web Serial needs Chrome / Edge / Opera, served over http://localhost or https://. Arduino flashing is wired for ATmega328P boards (Uno, Nano, Pro Mini). The rest of the board list — Mega, Leonardo, Micro, and Little Bird's Shakey and EagLED — compiles here but has to be uploaded from the desktop Arduino IDE, because those boards use a different bootloader protocol.