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1.1       root        1: .if n .ds / /
                      2: .if t .ds / \z/\h'\w'*'u'
                      3: .TH UNITS 1  "18 January 1983"
                      4: .SH NAME
                      5: units \- conversion program
                      6: .SH SYNOPSIS
                      7: .B units
                      8: .SH DESCRIPTION
                      9: .I Units
                     10: converts quantities expressed
                     11: in various standard scales to
                     12: their equivalents in other scales.
                     13: It works interactively in this fashion:
                     14: .PP
                     15: .I "   You have:"
                     16: inch
                     17: .br
                     18: .I "   You want:"
                     19: cm
                     20: .br
                     21: .I "           * 2.54000e+00
                     22: .br
                     23: .I "           \*/ 3.93701e\-01
                     24: .PP
                     25: A quantity is specified as a multiplicative combination of
                     26: units optionally preceded by a numeric multiplier.
                     27: Powers are indicated by suffixed positive integers,
                     28: division by the usual sign:
                     29: .PP
                     30: .I "   You have:"
                     31: 15 pounds force/in2
                     32: .br
                     33: .I "   You want:"
                     34: atm
                     35: .br
                     36: .I "           * 1.02069e+00"
                     37: .br
                     38: .I "           \*/ 9.79730e\-01"
                     39: .PP
                     40: .I Units 
                     41: only does multiplicative scale changes.
                     42: Thus it can convert Kelvin to Rankine, but not Centigrade to
                     43: Fahrenheit.
                     44: Most familiar units,
                     45: abbreviations, and metric prefixes are recognized,
                     46: together with a generous leavening of exotica
                     47: and a few constants of nature including:
                     48: .PP
                     49: .nf
                     50:        pi      ratio of circumference to diameter
                     51:        c       speed of light
                     52:        e       charge on an electron
                     53:        g       acceleration of gravity 
                     54:        force   same as g
                     55:        mole    Avogadro's number
                     56:        water   pressure head per unit height of water
                     57:        au      astronomical unit
                     58: .PP
                     59: .fi
                     60: `Pound' is a unit of
                     61: mass.
                     62: Compound names are run together, e.g. `lightyear'.
                     63: British units that differ from their US counterparts
                     64: are prefixed thus: `brgallon'.
                     65: Currency is denoted `belgiumfranc', `britainpound', ...
                     66: .PP
                     67: For a complete list of units, `cat /usr/lib/units'.
                     68: .SH FILES
                     69: /usr/lib/units
                     70: .SH BUGS
                     71: Don't base your
                     72: financial plans on the currency conversions.

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