HeaderLabel / HeaderLeftLabelDraw a label in the component header. This can be used on a method, property, field, or a Component class.
using SaintsField; using SaintsField.ComponentHeader; [HeaderLeftLabel("Fixed Text")] [HeaderLabel] // dynamic text public string label; // also works if it's a private (non-serialized) type

Can be used on a component class:
using SaintsField; using SaintsField.ComponentHeader; [HeaderLabel("quot; + nameof(value))] [HeaderLeftLabel("dynamic:")] public class HeaderLabelClassSaExample : MonoBehaviour { public string value; }
