> For the complete documentation index, see [llms.txt](https://docs.imerit.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.imerit.net/3d-multi-sensor-fusion/labeling/3d-multi-sensor-fusion-labeling-editor/key-features/ground-and-ceiling-mover.md).

# Ground and Ceiling Mover

The Ground and Ceiling Mover is a two-way slider on the bottom right of the point cloud that allows users to hide points from ceiling to ground and vice-versa while labeling an object.

{% hint style="success" %} <img src="/files/mXHEiGg35kYjwl0I4r5p" alt="" data-size="line"> Ground and Ceiling sliders help filter out points which the user does not need to view.
{% endhint %}

<figure><img src="/files/4dLR26GB4L3p6PbkAG6p" alt=""><figcaption></figcaption></figure>

## Benefits

* **Enhanced Focus:** Allows annotators to concentrate on a specific area of interest, eliminating distractions from irrelevant regions.
* **Increased Annotation Accuracy:** Provides a clearer view of smaller, detailed areas, aiding precise annotation.

***

## Steps to use Ground and Ceiling Slider

{% stepper %}
{% step %}

#### Use case: hide unnecessary points

On hiding unnecessary points, users can more accurately mark the points belonging to the object. For example, a car parked under a tree can be marked easily from the top view by sliding the marker from the ceiling lower to hide points belonging to the tree top.
{% endstep %}

{% step %}

#### Shortcuts to change levels

* Ground Level (increase/decrease): `G + Up/Down Arrow`
* Ceiling Level (increase/decrease): `C + Up/Down Arrow`
  {% endstep %}
  {% endstepper %}