> For the complete documentation index, see [llms.txt](https://help.visibrain.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.visibrain.com/filters-and-helpful-documents.md).

# Filters and helpful documents

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td>📘 Scope of coverage </td><td><a href="/filters-and-helpful-documents/scope-of-coverage.md">Scope of coverage</a></td></tr><tr><td>📘 List of operators to create a topic</td><td><a href="/filters-and-helpful-documents/list-of-operators-to-create-a-topic.md">List of operators to create a topic</a></td></tr><tr><td>📘 List of operators to add filters</td><td><a href="/filters-and-helpful-documents/list-of-operators-to-add-filters.md">List of operators to add filters</a></td></tr><tr><td>📘 Quicktrends operators list</td><td><a href="/filters-and-helpful-documents/quicktrends-operator-list.md">Quicktrends operator list</a></td></tr><tr><td>📘 List of languages</td><td><a href="/filters-and-helpful-documents/list-of-languages.md">List of languages</a></td></tr></tbody></table>