GUILayer

HitTest	Get the GUI element at a specific screen position.

enabled	Enabled Behaviours are Updated, disabled Behaviours are not.
animation	The Animation attached to this GameObject (null if there is none attached).
audio	The AudioSource attached to this GameObject (null if there is none attached).
camera	The Camera attached to this GameObject (null if there is none attached).
collider	The Collider attached to this GameObject (null if there is none attached).
constantForce	The ConstantForce attached to this GameObject (null if there is none attached).
gameObject	The game object this component is attached to. A component is always attached to a game object.
guiText	The GUIText attached to this GameObject (null if there is none attached).
guiTexture	The GUITexture attached to this GameObject (Read Only). (null if there is none attached).
hingeJoint	The HingeJoint attached to this GameObject (null if there is none attached).
light	The Light attached to this GameObject (null if there is none attached).
networkView	The NetworkView attached to this GameObject (Read Only). (null if there is none attached).
particleEmitter	The ParticleEmitter attached to this GameObject (null if there is none attached).
particleSystem	The ParticleSystem attached to this GameObject (null if there is none attached).
renderer	The Renderer attached to this GameObject (null if there is none attached).
rigidbody	The Rigidbody attached to this GameObject (null if there is none attached).
tag	The tag of this game object.
transform	The Transform attached to this GameObject (null if there is none attached).
hideFlags	Should the object be hidden, saved with the scene or modifiable by the user?
name	The name of the object.

BroadcastMessage	Calls the method named methodName on every MonoBehaviour in this game object or any of its children.
CompareTag	Is this game object tagged with tag?
GetComponent	Returns the component of Type type if the game object has one attached, null if it doesn't.
GetComponentInChildren	Returns the component of Type type in the GameObject or any of its children using depth first search.
GetComponents	Returns all components of Type type in the GameObject.
GetComponentsInChildren	Returns all components of Type type in the GameObject or any of its children.
SendMessage	Calls the method named methodName on every MonoBehaviour in this game object.
SendMessageUpwards	Calls the method named methodName on every MonoBehaviour in this game object and on every ancestor of the behaviour.
GetInstanceID	Returns the instance id of the object.
ToString	Returns the name of the game object.

Destroy	Removes a gameobject, component or asset.
DestroyImmediate	Destroys the object obj immediately. You are strongly recommended to use Destroy instead.
DontDestroyOnLoad	Makes the object target not be destroyed automatically when loading a new scene.
FindObjectOfType	Returns the first active loaded object of Type type.
FindObjectsOfType	Returns a list of all active loaded objects of Type type.
Instantiate	Clones the object original and returns the clone.

bool	Does the object exist?
operator !=	Compares if two objects refer to a different object.
operator ==	Compares if two objects refer to the same.