What are these Marlin terms?

Running Marlin 2.0.7.2 on an Anycubic Predator delta. After running "Auto Delta Calibration" from the LCD, I get:

Height: 453.00
Ex: 0.000
Ey: -4.969
Ez: -4.960
Radius: 216.69
Tx: 0.485
Ty: -0.352
Tz: -0.133
Diag Rod: 440.00

I believe I understand most of the terms, and where they are entered in the Marlin Configuration.h, EXCEPT for the Ex, Ey, and Ez values. What are those, what are they named, and where would they go in the latest Marlin? What are they for, and what do they do?

static void print_calibration_settings(const bool end_stops, const bool tower_angles) {
  SERIAL_ECHOPAIR(".Height:", delta_height);
  if (end_stops) {
    print_signed_float(PSTR("Ex"), delta_endstop_adj.a);
    print_signed_float(PSTR("Ey"), delta_endstop_adj.b);
    print_signed_float(PSTR("Ez"), delta_endstop_adj.c);
  }
  if (end_stops && tower_angles) {
    SERIAL_ECHOPAIR("  Radius:", delta_radius);
    SERIAL_EOL();
    SERIAL_CHAR('.');
    SERIAL_ECHO_SP(13);
  }
  if (tower_angles) {
    print_signed_float(PSTR("Tx"), delta_tower_angle_trim.a);
    print_signed_float(PSTR("Ty"), delta_tower_angle_trim.b);
    print_signed_float(PSTR("Tz"), delta_tower_angle_trim.c);
  }

So

Ex: 0.000
Ey: -4.969
Ez: -4.960
is delta_endstop_adj

and
Tx: 0.485
Ty: -0.352
Tz: -0.133
is delta_tower_angle_trim

Many Thanks!