This property returns and sets the distance between the internal left edge of an object and the left edge of its container.
object.Left [= value]
For a control, the Left property is always measured in units depending on the coordinate system of its container. The values for this property change as the object is moved by a user or by code.
For this property, you can specify a single-precision number.
Use the Left, Top, Height, and Width properties for operations based on an object's external dimensions, such as moving or resizing.