# How To

- [Install Screena Portal](https://help.screena.ai/resources/how-to/install-screena-portal.md)
- [Preparing your system](https://help.screena.ai/resources/how-to/install-screena-portal/preparing-your-system.md)
- [Installing Screena Portal backend](https://help.screena.ai/resources/how-to/install-screena-portal/installing-screena-portal-backend.md)
- [Launching Screena Portal backend](https://help.screena.ai/resources/how-to/install-screena-portal/launching-screena-portal-backend.md)
- [Installing the web server](https://help.screena.ai/resources/how-to/install-screena-portal/installing-the-web-server.md)
- [Configuring Screena Portal](https://help.screena.ai/resources/how-to/install-screena-portal/configuring-screena-portal.md)
- [Start Screena Portal](https://help.screena.ai/resources/how-to/start-screena-portal.md)
- [Starting PostgreSQL database](https://help.screena.ai/resources/how-to/start-screena-portal/starting-postgresql-database.md)
- [Starting Apache HTTP server](https://help.screena.ai/resources/how-to/start-screena-portal/starting-apache-http-server.md)
- [Starting Screena application](https://help.screena.ai/resources/how-to/start-screena-portal/starting-screena-application.md)
- [Start command](https://help.screena.ai/resources/how-to/start-screena-portal/starting-screena-application/start-command.md)
- [Restart command](https://help.screena.ai/resources/how-to/start-screena-portal/starting-screena-application/restart-command.md)
- [Stop command](https://help.screena.ai/resources/how-to/start-screena-portal/starting-screena-application/stop-command.md)


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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://help.screena.ai/resources/how-to.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.