# Key concepts

> Core terminology used throughout the Delegate documentation, including sessions, routines, skills, screen context, and execution modes.

This page defines the core terms used throughout the Delegate documentation. Each concept links to the page where you can learn more.

## Core concepts

The following table defines the core terms used throughout this guide.

| Term | Description |
|------|-------------|
| **Sessions** | A continuous conversation with Delegate where you make requests and it performs actions. Sessions persist across app restarts and can be resumed later. |
| **Screen context** | Whether Delegate can see a screenshot of your screen with each message. Controlled by the Screen Context toggle at the bottom of the Delegate window. See [Screen context](local-security-configuration.md#screen-context) in Local security configuration. |
| **Skills** | Pre-built capabilities that teach Delegate how to work with specific applications or perform common tasks. Installed from the Delegate Store, see [Share work with the Delegate Store](delegate-store.md), or created by your organization. |
| **Routines** | Saved workflows that you can run with a single click. A Routine captures a pattern of work you do repeatedly. See [Repeat work with Routines](routines.md). |
| **Execution mode** | Whether Delegate takes over your screen to act — Autonomous, Guided, or Offscreen (without touching your screen). See [Execution mode](local-security-configuration.md#execution-mode) in Local security configuration. |
| **Connections** | Secure links to your business applications through Integration Service connectors or MCP servers. See [Connecting tools](connecting-tools.md). |
| **Tools** | The specific capabilities Delegate can use — UI automation, web search, file operations, image generation, and more. You control which tools are enabled in [Settings → Security](local-security-configuration.md). |
| **Work profile** | The role-specific configuration your organization enables for your account, such as Cartographer, distinct from the general-purpose default. See [Delegate profiles](introduction.md#delegate-profiles) in the Introduction. |