> For the complete documentation index, see [llms.txt](https://zerodensitydocumentation.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zerodensitydocumentation.gitbook.io/docs/reality-5.3-sp1/reality-5.3-sp1/faq/glossary.md).

# Glossary

Concepts are fundamental to understanding complex abstract subjects. This section aims to provide a glossary to keep you across the Reality Hub features and its approach to control systems. 

#### <mark style="color:blue;">Action</mark>

Part of a toolset for animating properties, calling, and triggering functions. See [Actions](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/actions.md)

#### <mark style="color:blue;">Actor</mark>

Any object can be placed into a level, such as a Camera and static mesh. See [Spawning Reality Actor](/docs/reality-5.3-sp1/reality-5.3-sp1/tutorials/reality-actor-spawning.md)

#### <mark style="color:blue;">Administrative Privileges</mark>

Also known as Administrative Rights, it refers to an admin username and password of an Engine that Reality Hub Server is connecting.

#### <mark style="color:blue;">Administrator</mark>

User who is capable of governing other users except for the Admin. See [The Admin](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/user-management/advanced-user-management/role-of-the-admin-and-administrators.md)

#### <mark style="color:blue;">Advanced Preview Monitor</mark>

Displaying interface for previewing an Engine scene. See [APM](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/nodegraph/advanced-preview-monitor.md)

#### <mark style="color:blue;">Cache Directory</mark>

The file directory contains a project cache. The default project cache is located in the <mark style="color:orange;">**C:\cache**</mark>&#x20;

#### <mark style="color:blue;">Cache</mark>

Locally stored Project files.

#### <mark style="color:blue;">Canvas</mark>&#x20;

See [Nodegraph Canvas](#nodegraph-canvas)

#### <mark style="color:blue;">Channel Assignment</mark>

Assigning a particular set of graphics to be rendered by an Engine(s) configuration. See [Channel Assignment](/docs/reality-5.3-sp1/reality-5.3-sp1/configurations/configuring-reality-hub/engine-module-configuration/channel-assignments.md)

#### <mark style="color:blue;">Client</mark>&#x20;

See [RealityHub Client](#realityhub-client)

#### <mark style="color:blue;">Coloring</mark>

The method employed by the RealityHub documentation can help you distinguish various entities such as nodes, property groups, etc. See [How to Read this Documentation](/docs/reality-5.3-sp1/reality-5.3-sp1/faq/how-to-read-this-documentation.md)

#### <mark style="color:blue;">Command Prompt</mark>

Also known as cmd.exe or cmd, is the default command-line interpreter for Microsoft Windows.&#x20;

#### <mark style="color:blue;">Community Edition</mark>

Free-to-download version of RealityHub. See [FAQ](/docs/reality-5.3-sp1/reality-5.3-sp1/faq/frequently-asked-questions.md#what-is-realityhub-community-edition)

#### <mark style="color:blue;">Component</mark>

Building block for data-driven content. Components are part of the [Form Builder](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/form-builder.md) module. See [Form Builder Components](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/form-builder/form-builder-components.md)&#x20;

#### <mark style="color:blue;">Configuration Mode</mark>

Engine Launch mode with no operation restrictions. See [Launcher Interface](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/launcher/launcher-interface.md)

#### <mark style="color:blue;">Connected Loader</mark>

The menu lists the connected Reality Loaders. It can be reached by clicking on the Version Number. See [Reality Loader](/docs/reality-5.3-sp1/reality-5.3-sp1/configurations/configuring-reality-hub/reality-loader.md)

#### <mark style="color:blue;">Cooking</mark>

Storing contents and assets in platform-specific format particular formats. See [Cook Manager](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/cook-manager.md)

#### <mark style="color:blue;">Data Directory</mark>

A file directory for installing and storing [RealityHub Database](#realityhub-database). See [Installation](/docs/reality-5.3-sp1/reality-5.3-sp1/installations/installations/installing-reality-hub.md)

#### <mark style="color:blue;">Database Credentials</mark>

Collective name of the Database Username, Database Password, and Database Name. See [Installation](/docs/reality-5.3-sp1/reality-5.3-sp1/installations/installations/installing-reality-hub.md)

#### <mark style="color:blue;">Database</mark>

See [RealityHub Database](#realityhub-database)

#### <mark style="color:blue;">Debugging</mark>

A feature allows the internal behavior of the node to be investigated. See [Node Structure](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/nodegraph/node-structure.md)

#### <mark style="color:blue;">Engine Ping Interval</mark>

The time that RealityHub waits between ping packets. It is measured in seconds. See [General Engine Configuration](/docs/reality-5.3-sp1/reality-5.3-sp1/configurations/configuring-reality-hub/engine-module-configuration/general-engine-configuration.md#generalengineconfiguration-engineping)

#### <mark style="color:blue;">Engine Timeout</mark>

The duration that RealityHub waits for a response from your Engine before identifying changes.&#x20;

#### <mark style="color:blue;">Engine Type</mark>

Supported Engine type & version. It refers to the Engine selection operation in the Renderer section of the Launcher module. See [Launcher](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/launcher.md)

#### <mark style="color:blue;">Exposing</mark>&#x20;

Also known as exposing a parameter, the operation that allows suitable Engine elements (such as parameter, function, property, etc.) to be accessible by RealityHub.&#x20;

#### <mark style="color:blue;">Field Settings</mark>

Set of management tools for [Form Builder](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/form-builder.md) elements such as [Form Builder Components](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/form-builder/form-builder-components.md). Every Form Builder entity has Field Settings.

#### <mark style="color:blue;">Filter</mark>

Also known as a search filter, a tool for refining the search results of a particular module.&#x20;

#### <mark style="color:blue;">Fixed Port</mark>

Standard designated port for establishing communication between RealityHub Server and Reality Loader.

#### <mark style="color:blue;">GamePad</mark>

A feature provides input to various nodes to control them in a three-dimensional space. See [Node Structure](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/nodegraph/node-structure.md)

#### <mark style="color:blue;">Gang</mark>

Nodegraph operations for multi-Engine configurations. See [Gang Mode](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/gang-mode.md)

#### <mark style="color:blue;">Host</mark>

The Engine that hosts Projects.&#x20;

#### <mark style="color:blue;">Hostname</mark>

Windows computer name of the Engine you want to reach and control via RealityHub.&#x20;

#### <mark style="color:blue;">HTTP IP Address</mark>&#x20;

The IP address RealityHub listens. See [Installation](/docs/reality-5.3-sp1/reality-5.3-sp1/installations/installations/installing-reality-hub.md)

#### <mark style="color:blue;">HTTP Port</mark>&#x20;

The Port RealityHub Server accepts connections.

#### <mark style="color:blue;">Installation Path</mark>

File path where the Engine is installed.&#x20;

#### <mark style="color:blue;">License Locking</mark>&#x20;

See [License Reservation](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/user-management/advanced-user-management/license-reservation.md)

#### <mark style="color:blue;">Live Mode</mark>

Engine Launch mode with various operational restrictions. See [Launcher Interface](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/launcher/launcher-interface.md)

#### <mark style="color:blue;">Maintenance</mark>

License type related to version upgrading within a certain period of time. See [Licensing](/docs/reality-5.3-sp1/reality-5.3-sp1/installations/licensing-reality/licensing-reality-hub.md)

#### <mark style="color:blue;">Management Object</mark>

**Policies**, and **User and User Groups** sections of the [Advanced User Management Module](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/user-management/advanced-user-management.md).&#x20;

#### <mark style="color:blue;">Module</mark>

Main units of the RealityHub.&#x20;

#### <mark style="color:blue;">Monitoring</mark>&#x20;

Act of previewing Engine scene. See [APM](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/nodegraph/advanced-preview-monitor.md)

#### <mark style="color:blue;">Node</mark>

A node is an object, such as an event, function call, flow control operation, variable, etc. to define the functionality of the particular blueprint that contains it. See [Node Structure](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/nodegraph/node-structure.md)

#### <mark style="color:blue;">Nodegraph Canvas</mark>

A virtual board for conducting nodegraph operations. See [Nodegraph](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/nodegraph.md)

#### <mark style="color:blue;">Nodegraph Template</mark>

Set of RGraphs shipped with RealityHub.

#### <mark style="color:blue;">Node Tree</mark>

Two or more connected Nodes. See [Operating Nodegraph](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/nodegraph/operating-nodegraph.md#operatingnodegraph-connectingtwonodes)

#### <mark style="color:blue;">Non-Administrative</mark>

Type of Policy without administrative rights. Members of the Non-administrative policy cannot use User Management and Configuration modules. See [Advanced User Management](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/user-management/advanced-user-management.md)

#### <mark style="color:blue;">Playout Template Form</mark>

A template form inside the Playout module. See [Form Builder](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/form-builder.md) & [Playout](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/playout.md)

#### <mark style="color:blue;">Policy</mark>

Set of rules for module/user feature accessibility. [Advanced User Management](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/user-management/advanced-user-management.md)

#### <mark style="color:blue;">Reality Loader</mark>

An application allows you to connect Reality Hub Server to Engines. See [Reality Loader](/docs/reality-5.3-sp1/reality-5.3-sp1/configurations/configuring-reality-hub/reality-loader.md)

#### <mark style="color:blue;">RealityHub Client</mark>

User-side of the Reality Hub. User operations, such as connecting two nodes, occur via the client side through Reality Hub User Interface. &#x20;

#### <mark style="color:blue;">RealityHub Database</mark>

Organized collection of structured information stored in the dbdata folder, contains RGraphs, Actions, etc. See [Database Backup and Restore](/docs/reality-5.3-sp1/reality-5.3-sp1/installations/installations/installing-reality-hub/database-backup-and-restore.md)

#### <mark style="color:blue;">RealityHub Database Service</mark>

Microsoft Windows Service to run Reality Hub Database.

#### <mark style="color:blue;">RealityHub Service</mark>&#x20;

Microsoft Windows Service to run Reality Hub.

#### <mark style="color:blue;">RealityHub URL</mark>

HTTP IP Address and Port for communication with Reality Hub Server. See [Reality Loader](/docs/reality-5.3-sp1/reality-5.3-sp1/configurations/configuring-reality-hub/reality-loader.md)

#### <mark style="color:blue;">Renderer</mark>

Engine configuration for rendering the Project. See [Launcher](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/launcher.md)&#x20;

#### <mark style="color:blue;">Re-Time</mark>

Button for synchronizing the gen-lock time, and I/O systems, including tracking and Video I/O. See [Launcher Interface](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/launcher/launcher-interface.md)

#### <mark style="color:blue;">RGraph</mark>

Logic-based pipelines consist of [node trees](#node-tree). See [RGraph](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/nodegraph-actions/nodegraph/nodegraph-menu.md)

#### <mark style="color:blue;">Shared DDC</mark>

Network drive that all Engines can read/write derived data. See [General Engine Configuration](/docs/reality-5.3-sp1/reality-5.3-sp1/configurations/configuring-reality-hub/engine-module-configuration/general-engine-configuration.md)

#### <mark style="color:blue;">Shared Folder</mark>

File path contains the Project that is accessible with Reality Hub for launching. See [Launcher](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/launcher.md)

#### <mark style="color:blue;">Status Colors</mark>

Engine status color indicators. See [Status Colors](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/launcher/launcher-interface.md#launcherinterface-statuscolors) & [RealityEngine AMPERE Led Display](/docs/reality-5.3-sp1/reality-5.3-sp1/configurations/configuring-reality-hub/reality-loader/realityengine-ampere-led-display.md)

#### <mark style="color:blue;">System ID</mark>

A unique ID of the system. It must be delivered to the Licensing Team for any inquiry. See [Licensing](/docs/reality-5.3-sp1/reality-5.3-sp1/installations/licensing-reality/licensing-reality-hub.md)&#x20;

#### <mark style="color:blue;">The Admin</mark>

The first & default user. It is created during the installation. See [Role of the Admin and Administrators](/docs/reality-5.3-sp1/reality-5.3-sp1/user-guide/user-management/advanced-user-management/role-of-the-admin-and-administrators.md)

#### <mark style="color:blue;">UState</mark>

State of an exposed parameter inside the RealityHub. See [Controlling Unreal Engine](broken://pages/ePSRZjwR7yfUQggWo1cV) & [UState](broken://pages/niXScW34G4IPv0fa6ur8)