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Original file line number Diff line number Diff line change
Expand Up @@ -29,8 +29,8 @@ Example sketches can be found in the _File > Examples_ menu.
![Arduino IDE File menu with Examples section selected](img/ide-menu-file-examples.png)

* **Built-in Examples:** Examples packaged with Arduino IDE. They are located inside the application folder.
* In **Arduino IDE 2.0** they are stored in the `resources/app/node_modules/arduino-ide-extension/Examples` subfolder.
* In **Arduino IDE 1.8** they are stored in the `libraries` subfolder for Windows and Linux, and `Contents/Java/libraries` on macOS.
* In **Arduino IDE 2.x** they are stored in the `resources/app/node_modules/arduino-ide-extension/Examples` subfolder.
* In **Arduino IDE 1.x** they are stored in the `libraries` subfolder for Windows and Linux, and `Contents/Java/libraries` on macOS.
* **Examples for \<board name\>:** Stored inside the board platform's `libraries` subfolder, e.g. `Arduino15/packages/arduino/hardware/avr/1.8.4/libraries/Wire`. These are only accessible by Arduino IDE when one of the boards from that package is selected from the _Tools > Board_ menu.
* **Examples from Custom Libraries:** Installed with the Library Manager or the _Sketch > Include Library > Add. ZIP Library_ dialog.
* **Examples for any board:** Installed with the Library Manager or the _Sketch > Include Library > Add. ZIP Library_ dialog. <!-- 1.x only? -->
Expand Down Expand Up @@ -134,8 +134,11 @@ The application folder contains the executable files used when running Arduino.

The default installations paths are:

* **Windows:** `C:\Program Files (x86)\Arduino`
* **macOS:** `/Applications/Arduino.app/Contents/Java`
* **Windows (IDE 2.x):** `C:\Program Files\Arduino IDE`
* **Windows (IDE 1.x):** `C:\Program Files (x86)\Arduino`
* **Windows (Windows App Store):** `C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_<VERSION>`
* **macOS (IDE 2.x):** `/Applications/Arduino IDE.app/Contents`
* **macOS (IDE 1.x):** `/Applications/Arduino.app/Contents/Java`
* **Linux:** See [Open the Arduino IDE installation folder](https://support.arduino.cc/hc/en-us/articles/4412943340178-Open-the-Arduino-IDE-installation-folder#linux).

Generally, the contents of this folder should not be changed.
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Expand Up @@ -11,14 +11,13 @@ To locate the `Wire.h` library in the Arduino installation path and modify its b

2. Find the file `Wire.h`:

* **Windows:** `C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\Wire\src\Wire.h`
* **Windows (IDE 2.x):** `C:\Users\{username}\AppData\Local\Arduino15\packages\arduino\hardware\avr\{version}\libraries\Wire\src\Wire.h`
* **Windows (IDE 1.x):** `C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\Wire\src\Wire.h`
* **macOS:** `~/Library/Arduino15/hardware/arduino/avr/libraries/Wire/src/Wire.h`
* **Linux:** `~/sketchbook/hardware/arduino/avr/libraries/Wire/src/Wire.h`

3. Open the file `Wire.h` with a text editor.

![wire header file location](img/wire.h_header_file.png)

4. Locate the line `#define BUFFER_LENGTH 32` and change the number `32` to the desired value.

5. Save the changes made and close the text editor.
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Expand Up @@ -11,11 +11,15 @@ Learn how to open the Arduino IDE installation folder on your system.

## Windows

Arduino IDE is installed in `C:\Program Files (x86)\Arduino` by default.
Arduino IDE is installed in `C:\Program Files\Arduino IDE` by default.

1. Open Explorer.
1. Open File Explorer (AKA Windows Explorer).

2. Navigate to `C:\Program Files (x86)\Arduino`.
2. Navigate to the installation folder:

* **Windows (IDE 2.x):** `C:\Program Files\Arduino IDE`
* **Windows (IDE 1.x):** `C:\Program Files (x86)\Arduino`
* **Windows (Windows App Store):** `C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_<VERSION>`

---

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Expand Up @@ -11,7 +11,7 @@ Learn how to uninstall Arduino IDE.

* **Windows:**
* In Windows 10: Open the start menu and find the Arduino application. Right-click on it and select **Uninstall**.
* Alternatively, open Explorer and go to `C:\Program Files (x86)\Arduino`, then run `uninstall.exe`.
* Alternatively, open Explorer and run `C:\Program Files\Arduino IDE\Uninstall Arduino IDE.exe`. Or if you're using Arduino IDE 1.x, `C:\Program Files (x86)\Arduino\uninstall.exe`.
* **macOS:**
1. Open Finder.
2. Go to the `Applications` folder.
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