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During the manufacturing of large industrial belts (such as conveyor belts),
the location of defects (both point defects and area defects) can be 
recorded, and then plotted on a long/narrow grid that resembles the belt.

I drew the grid using gplot, and plotted the point and area colors 
using annotated pies (dots) and bars (rectangular areas).

I used 'title2' to fake a legend, and I used left & right-justified
footnote text for the 'core end' and 'belt end' labels below the plot.

I used goptions xpixels & ypixels to specify the long/narrow proportions,
and specified my text height in 'pt' (points) rather than pct (percent),
since odd-proportioned graphs can sometimes make pct-sized text look

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