Legacy Documentation: Version 4.3.0
EditorGUI.ToggleLeft
static function ToggleLeft(position: Rect, label: string, value: bool, labelStyle: GUIStyle = EditorStyles.label): bool;
static function ToggleLeft(position: Rect, label: GUIContent, value: bool, labelStyle: GUIStyle = EditorStyles.label): bool;
Parameters

position Rectangle on the screen to use for the toggle.
label Label to display next to the toggle.
value The value to edit.
labelStyle Optional GUIStyle to use for the label.
Returns
bool The value set by the user.
Description

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

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