0005 BDOS 2CD0 CASE 2CE2 COLUMN 0924 INIT 2CCA MAXLEN 2CD4 MXYCP 2CE1 ROW 2CD3 ROWB4? 236C TTYI 236F TTYI00 238C TTYO 234C TTYQ 2652 XYCP 2663 XYCP00 2674 XYCP10