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title: Using Query String Parameters in a Page
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# Using Query String Parameters in a Page

As shown in earlier examples, the default page context—that is, the record that provides the source of data displayed on the page—is controlled by a query string parameter named `id` in the page URL. You can also get and set query string parameters in the Visualforce markup.

-   **[Getting Query String Parameters](https://developer.salesforce.com/docs/platform/salesforce-pages-developers-guide/guide/pages-quick-start-query-params-getting.md)**  

-   **[Setting Query String Parameters in Links](https://developer.salesforce.com/docs/platform/salesforce-pages-developers-guide/guide/pages-quick-start-query-params-setting.md)**  

-   **[Getting and Setting Query String Parameters on a Single Page](https://developer.salesforce.com/docs/platform/salesforce-pages-developers-guide/guide/pages-quick-start-query-params-getting-setting.md)**