LayoutFarm.Text.EditableTextRun.LeftCopy C# (CSharp) Method

        public override EditableRun LeftCopy(int index)
        {
            if (index > -1)
            {
                return MakeTextRun(0, index + 1);
            }
            else
            {
                return null;
            }
        }
        internal override void InsertAfter(int index, char c)