# Work modes WS has two global work modes. First - raw http mode. It's fastest and flexible. Usually, this mode enough for most cases. Second — work with Selenium. In this doc it's denoted by «selenium». In this mode WS work with target through Firefox browser. It's very slow and not so flexible like raw work. But server «see» WS as real user — it's loading CSS, images, execute some JS logic. In detail you may read about it in Selenium section. Modules has many parWS has two global work modes. First - raw http mode. It's fastest and flexible. Usually, this mode enough for most cases. Second — work with Selenium. In this doc it's denoted by «selenium». In this mode WS work with target through Firefox browser. It's very slow and not so flexible like raw work. But server «see» WS as real user — it's loading CSS, images, execute some JS logic. In detail you may read about it in Selenium section. Modules has many params, but not all of them usable in both modes. Some available only in raw mode, some only in selenium. For this cases modules params descriptions contains two columns of modes.ams, but not all of them usable in both modes. Some available only in raw mode, some only in selenium. For this cases modules params descriptions contains two columns of modes. --- # 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://webscout.gitbook.io/webscout-en/work-modes.md?ask= ``` 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.