> I'm relatively new to *roff in general. I can't figure out how to
> keep track of a numeric value, for example a currency sum through a
> document.
>
> How is it done? We start with a value of 0, and each time we want to
> add to the "total" we increment a number register (or something) by
> the desired value.
>
> At the end we can print "Total = $numregister" (so to speak).
See section `Setting Registers' in groff.info.
Werner
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