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Added the start of a high score table. There are four steps in a high score table:
- load it
- figure if player has a spot in it
- ask them their name
- save it.

I've started with step three because I felt like it and also because it's easier to do steps 3 and 4 so I have data for step 1 and 2.

Commit: https://github.com/colinleroy/a2tools/commit/9f0897c276dcae0c7a3c4d0142261a110288a2dd

#RetroComputing #Apple2 #MARCHintosh