Epson FX-80 User Manual page 224

Quite a difference! The program doubles and halves N instead of ad-
ding and subtracting one. This geometric progression creates a very
different pattern.
Also notice that the pattern only repeats once because the variable
RE is set to one.
Now's the time to experiment with some of your own changes to the
variables and loops.
The next chapter introduces one of the most exciting features of the
FX-80: user-defined characters. That's right, you can redefine the en-
tire character set if you want to!
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