$ cat pm_high_score.dat
cat: pm_high_score.dat: No such file or directory

$ pm_high_score.pl
Initials (or Return to end): AA
Random score: 82
<<<<<<< Before Adding:
High Score Table
>>>>>>> After Adding:
High Score Table
82     AA
Initials (or Return to end): BB
Random score: 69
<<<<<<< Before Adding:
High Score Table
82     AA
>>>>>>> After Adding:
High Score Table
82     AA
69     BB
Initials (or Return to end): 

$ cat pm_high_score.dat
82 AA
69 BB

... ran several times to exceed MAX_HIGH_SCORES_TO_SHOW ...

High Score Table
90     II
90     LL
85     DD
82     AA
81     EE
69     BB
56     CC
55     GG
39     JJ
23     FF
Initials (or Return to end): 

$ cat pm_high_score.dat
90 II
90 LL
85 DD
82 AA
81 EE
69 BB
56 CC
55 GG
39 JJ
23 FF
22 KK
18 HH
16 MM