# Core Concepts

- [Command System](/old-kb/toolkit-for-ui-and-ux/unity/learning/core-concepts/command-system.md): Parse commannds from players and invoke corresponding GameEvents to drive emotes, help systems and macro systems and more.
- [Cursor System](/old-kb/toolkit-for-ui-and-ux/unity/learning/core-concepts/cursor-tools.md): Create smooth, responsive context sensitive and animated cursors for your game.
- [Drag and Drop System](/old-kb/toolkit-for-ui-and-ux/unity/learning/core-concepts/drag-and-drop-system.md): Easy to use, drag and drop system for Unity 3D
- [Interaction Tools](/old-kb/toolkit-for-ui-and-ux/unity/learning/core-concepts/interaction-tools.md): Tools to help your game be more responsive
- [Logging & Feedback](/old-kb/toolkit-for-ui-and-ux/unity/learning/core-concepts/feedback-tools.md): Get player feedback with rich game data to help improve your game.
- [Scene Tools](/old-kb/toolkit-for-ui-and-ux/unity/learning/core-concepts/scenes-management.md): Explore the features and capabilities of User eXperience's Scenes system including multiscene management, batch load and unload and much more.
- [Selection System](/old-kb/toolkit-for-ui-and-ux/unity/learning/core-concepts/selection-system.md): Getting to know the Heathen selection system
- [Tooltip System](/old-kb/toolkit-for-ui-and-ux/unity/learning/core-concepts/tooltips.md): Simple, roust flexable tooltips capable of so much more than simply showing and hiding panels.
- [Window System](/old-kb/toolkit-for-ui-and-ux/unity/learning/core-concepts/window-tools.md): Easily manage in game windows, panels and dialogs.