Sony PMC-20 Operating Instructions Manual page 16

Creating your own program (Program Play) (continued)
16
The CD Player
To cancel Program Play
Press MODE until "PGM" disappears from the
display.
To check the order of tracks before play
Press DISPLAY•ENTER MEMORY on the player.
Every time you press the button, the track number
appears in the programed order.
To change the current program
Press p once if the CD is stopped and twice if the CD
is playing. The current program will be erased. Then
create a new program following the programing
procedure.