Hi, I want to know how can I avoid buttons be placed on new lines:

public class ItemCreator : EditorWindow
{
[MenuItem("Window/Creador de Items")]
void OnGUI() {
GUILayout.Button("+", GUILayout.Width(40), GUILayout.Height(40));
GUILayout.Button("+", GUILayout.Width(40), GUILayout.Height(40));
GUILayout.Button("+", GUILayout.Width(40), GUILayout.Height(40));
//....
}
}
How can I display them on the same line?
Thanks in advance.
Bye. 
BeginHorizontal:
EditorGUILayout.BeginHorizontal();
GUILayout.Button("+", GUILayout.Width(40), GUILayout.Height(40));
GUILayout.Button("+", GUILayout.Width(40), GUILayout.Height(40));
GUILayout.Button("+", GUILayout.Width(40), GUILayout.Height(40));
EditorGUILayout.EndHorizontal();