# Tools

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<img src="./media/ButtonTools.png" width="44" height="44">

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The **Tools** menu contains specialised functions and options for working with your model.

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## Centre of Gravity

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<img src="./media/ButtonCenterOfGravity.png" width="44" height="44">

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**Calculate centre of gravity**

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<img src="./media/ButtonCOGDownload.png" width="44" height="44">

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**Export centre of gravity data** as an Excel file.

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There are two methods of calculating the centre of gravity (COG) of objects in your model.

- If the necessary attribute data is available in Smart3D or through special labels in **AdapterForSmartReview** (`Dry CG`), it is used to calculate the COG.

- Alternatively, UDiTH will calculate an approximate COG.

> Objects are highlighted in green if they have COG data and in red if they lack it.

## Highlight Linked Objects

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<img src="./media/ButtonLinkedObjects.png" width="44" height="44">

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**Highlight linked objects**

Clicking this icon greys out all objects that do not have a link. Objects in UDiTH can be linked to documents, maintenance manuals, equipment lists, websites, and more.

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## Automatic Labelling

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<img src="./media/ButtonAutoLabeling.png" width="44" height="44">

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**Toggle automatic labelling**

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1. Click the **Settings** button [<img src="./media/ButtonSettings.png" width="20" height="20">] on the left side of the screen.

2. In the menu that appears in the bottom-right corner of the screen, scroll down to **Attribute options** and click **Select attributes for automatic labelling**.

<img src="./media/SettingsAutomaticLabelingAttributes.png" width="300">

3. Next, select the required attributes by dragging them into the box on the right:

<img src="./media/AutomaticLabelingAttributes.png" width="400" height="">

><img src="./media/Icon_Info.png" width="16" height="16"> You can type a character on the keyboard to jump directly to that position in the list.

## Activate Line Tracking

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<img src="./media/ButtonLineTracking.png" width="44" height="44">

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**Activate line tracking**

When you select a pipe, the line tracking feature displays arrows at its ends. Clicking these arrows moves directly to the next object in the pipeline.

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<img src="./media/image156.png" width="714" height="153">

> For the best results in **AdapterForSmartReview**, use the following settings under `Tools > Settings > Advanced`: set `Stroking Tolerance` to `100` and enable `Advanced Graphics Handling for measuring and line tracking`.

### QR Decoder

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<img src="./media/ButtonQR.png" width="44" height="44">

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**Open QR decoder**

You can place QR codes containing a deep link in your plant so that they can be scanned with a mobile device and interpreted by UDiTH.

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1. Click **Open QR decoder**. A new tab opens and activates the camera on your mobile device.

2. If a QR code containing a deep link is detected, UDiTH follows it automatically.

3. Otherwise, refer to **Linking** in this manual for more information on how to create a deep link.

You can then use a QR code generator to create a QR code for your link.