Unity - Scripting API:

Description

Class containing methods to ease debugging while developing a game.

developerConsoleVisible	Opens or closes developer console.
isDebugBuild	In the Build Settings dialog there is a check box called "Development Build".
logger	Get default debug logger.

Assert	Assert a condition and logs a formatted error message to the Unity console on failure.
AssertFormat	Assert a condition and logs a formatted error message to the Unity console on failure.
Break	Pauses the editor.
ClearDeveloperConsole	Clears errors from the developer console.
DrawLine	Draws a line between specified start and end points.
DrawRay	Draws a line from start to start + dir in world coordinates.
Log	Logs message to the Unity Console.
LogAssertion	A variant of Debug.Log that logs an assertion message to the console.
LogAssertionFormat	Logs a formatted assertion message to the Unity console.
LogError	A variant of Debug.Log that logs an error message to the console.
LogErrorFormat	Logs a formatted error message to the Unity console.
LogException	A variant of Debug.Log that logs an error message from an exception to the console.
LogFormat	Logs a formatted message to the Unity Console.
LogWarning	A variant of Debug.Log that logs a warning message to the console.
LogWarningFormat	Logs a formatted warning message to the Unity Console.