P7b5 CEEFAX 7B5 Tue 15 Nov 20:00/00 |B21111|a17TXtest5|m10|j2X29This file te sts the error in transmissionx26command sub-routine...................This is pa rt of the file..... and here is a UER]|My spec shows four o ther error generating commands which ar e first|u, second|v, third|x, and fourth |y end of file is here :|c