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+.. highlight:: cpp
+
+.. _lang-toggleled:
+
+toggleLED()
+===========
+
+*Toggle* the built-in LED: switch it from off to on, or on to off.
+
+Library Documentation
+---------------------
+
+.. doxygenfunction:: toggleLED
+
+Example
+-------
+
+.. _lang-toggleled-example:
+
+This example sets up the board's LED pin for output, then toggles the
+LED every 100 milliseconds::
+
+    void setup() {
+        pinMode(BOARD_LED_PIN, OUTPUT);
+    }
+
+    void loop() {
+        toggleLED();
+        delay(100);
+    }
+
+
+See Also
+--------
+
+- :ref:`BOARD_LED_PIN <lang-board-values-led>`
+- :ref:`togglePin() <lang-togglepin>`