---
title: Documentation
---
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To provide different kinds of documentation support (tooltips on **Ctrl-hover**, quick documentation popup etc.), the plugin needs to provide an implementation of the
[`DocumentationProvider`](upsource:///platform/analysis-api/src/com/intellij/lang/documentation/DocumentationProvider.java)
interface and register it in the `com.intellij.lang.documentationProvider` extension point.
A standard base class for such implementations is available in the class
[`AbstractDocumentationProvider`](upsource:///platform/analysis-api/src/com/intellij/lang/documentation/AbstractDocumentationProvider.java).

**Example**:
[`DocumentationProvider`](upsource:///plugins/properties/src/com/intellij/lang/properties/PropertiesDocumentationProvider.java)
for
[Properties language plugin](upsource:///plugins/properties/)


The `getQuickNavigateInfo()` method returns the text to be displayed when the user holds the mouse over an element with `Ctrl` pressed.