Variations; Symmetric Pattern - Epson FX Series User Manual

That's enough to knock your eyes right out of their sockets! And all
from a single one-dimensional array.
that

Variations

The computer completely controls your symmetric pattern, dot for
dot. Small changes in the program can affect the pattern in a big way.
For example, try this simple change in line 300:
FOR K=0 TO 0
300
And RUN the program again:
Notice in your printout (or in Figure 14-5) that each string of ones
and zeros in the array prints only once. The K loop in line 300 controls
the repetitions of these strings.
Figure 14-4. Symmetric pattern 1
195