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# 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" %} Ground and Ceiling sliders help filter out points which the user does not need to view.
{% endhint %}
## 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 %}
---
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Ground and Ceiling sliders help filter out points which the user does not need to view.
{% endhint %}