# Controller Blocks

These premium block slider controller blocks are simple yet very powerful when used correctly. This section covers a basic introduction to all the available controller blocks and their usage.

### Types of Controller Blocks

Currently, block slider offers the following controller blocks that can be further divided into 2 categories:

1. **Navigation Controller Blocks:**
   1. **Next Control**: When clicked, It moves the slider to the next slide.
   2. **Previous Control:** When clicked, It moves the slider to the previous slide.
   3. **First Control:** When clicked, It moves the slider to the first slide.
   4. **Last Control:** When clicked, It moves the slider to the last slide.
2. **Pagination Controller Blocks:**
   1. **Bullet Control:** Displays a series of bullets (mostly square items) that indicates each slide. When the user clicks on a specific bullet. It will move (slide) the slider to that specific index.
   2. **Number Control:** Similar to the bullet control in terms of functionality, but includes the slide index inside the bullet.
   3. **Upper Alphabets Control:** Similar to the bullet control in terms of functionality, but includes the slide index to the corresponding alphabet in uppercase.
   4. **Lower Alphabets Control:** Similar to the bullet control in terms of functionality, but includes the slide index to the corresponding alphabet in lowercase.
   5. **Upper Roman Control:** Similar to the bullet control in terms of functionality, but includes the slide index in uppercase roman numerals.
   6. **Lower Roman Control:** Similar to the bullet control in terms of functionality, but includes the slide index in lowercase roman numerals.
   7. **Thumbnail Pagination Control&#x20;**<mark style="color:red;">**(New)**</mark>**:** This special controller blocks allows you to create thumbnail pagination in block slider.

You can learn more about the thumbnail controller block here:

{% content-ref url="/pages/rq5cHSysSrbW9hbdGRJD" %}
[Thumbnails Controller Block](/controller-blocks/thumbnails-controller-block.md)
{% endcontent-ref %}

### Where to find the slider controller blocks?

You can insert the slider controller blocks using the "Slider Controller" block in block slider.

1. Search for the "Slider Controller" block in the post.

<figure><img src="/files/wU8jlxD3KdFtpGIuI24b" alt=""><figcaption><p>slider controller block</p></figcaption></figure>

2. Insert and select the desired controller type.

<figure><img src="/files/gNWcYgUUV97rH4M2lmoI" alt=""><figcaption><p>select controller type</p></figcaption></figure>


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