Unity - Scripting API:

public static function ToggleLeft(label: string, value: bool, params options: GUILayoutOption[]): bool;

public static bool ToggleLeft(string label, bool value, params GUILayoutOption[] options);

public static function ToggleLeft(label: GUIContent, value: bool, params options: GUILayoutOption[]): bool;

public static bool ToggleLeft(GUIContent label, bool value, params GUILayoutOption[] options);

public static function ToggleLeft(label: string, value: bool, labelStyle: GUIStyle, params options: GUILayoutOption[]): bool;

public static bool ToggleLeft(string label, bool value, GUIStyle labelStyle, params GUILayoutOption[] options);

public static function ToggleLeft(label: GUIContent, value: bool, labelStyle: GUIStyle, params options: GUILayoutOption[]): bool;

public static bool ToggleLeft(GUIContent label, bool value, GUIStyle labelStyle, params GUILayoutOption[] options);

Parameters

label	Label to display next to the toggle.
value	The value to edit.
labelStyle	Optional GUIStyle to use for the label.
options	An optional list of layout options that specify extra layouting properties. Any values passed in here will override settings defined by the `style`. See Also: GUILayout.Width, GUILayout.Height, GUILayout.MinWidth, GUILayout.MaxWidth, GUILayout.MinHeight, GUILayout.MaxHeight, GUILayout.ExpandWidth, GUILayout.ExpandHeight.

Make a toggle field where the toggle is to the left and the label immediately to the right of it.

EditorGUILayout.ToggleLeft is similar to GUILayout.Toggle but respects the EditorGUI.showMixedValue property and handles keyboard focus consistent with other Editor controls.