# Filter+ Basic

**Filter+ Basic** allows users to efficiently filter and select elements in Revit based on customizable criteria. It streamlines the process by offering various filter options such as category, material, and parameter-based filtering. This add-in provides an intuitive user interface, making it easy to search, organize, and select elements within a project.

For more details on specific features, explore the following:

{% content-ref url="/pages/M7860ubzqAPagpNWbvLN" %}
[Category Filter](/docs/add-ins/filter-plus-basic/category-filter.md)
{% endcontent-ref %}

{% content-ref url="/pages/Bk007bPayDNBUULaXuda" %}
[Material Filter](/docs/add-ins/filter-plus-basic/material-filter.md)
{% endcontent-ref %}

{% content-ref url="/pages/ogt3Xh23P5PKwbvqjBqv" %}
[Parameter Filter](/docs/add-ins/filter-plus-basic/parameter-filter.md)
{% endcontent-ref %}

{% embed url="<https://www.youtube.com/watch?v=2a1BU3-44rI>" %}


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://bimil.gitbook.io/docs/add-ins/filter-plus-basic.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.