10 REM There is no Unicode delta in ROM
20 REM So we first define a custom character
30 FOR l=0 TO 7
40 READ n
50 POKE USR "d"+l,n
60 NEXT l
70 REM our custom character is a user defined d
80 PRINT CHR$(147): REM this outputs our delta
9500 REM data for our custom delta
9510 DATA 0,0,8,20,34,65,127,0