whole_func_string: function line(p1, p2) {
          if (!(this instanceof line))
              return new line(p1, p2);
              this.start = point(p1);
          this.end = point(p2);
      }
func_code_string: function line(p1, p2) {
          if (!(this instanceof line))
              return new line(p1, p2);
              this.start = point(p1);
          this.end = point(p2);
      }
func_documentation_string: Line. -----