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Annotation of researchv10dc/man/man7/units.7, revision 1.1

1.1     ! root        1: .if n .ds / /
        !             2: .if t .ds / \z/\h'\w'*'u'
        !             3: .TH UNITS 7
        !             4: .CT 1 inst_info
        !             5: .SH NAME
        !             6: units \- conversion program
        !             7: .SH SYNOPSIS
        !             8: .B units
        !             9: .SH DESCRIPTION
        !            10: .I Units
        !            11: converts quantities expressed
        !            12: in various standard scales to
        !            13: their equivalents in other scales.
        !            14: It works interactively in this fashion:
        !            15: .PP
        !            16: .EX
        !            17: You have: inch
        !            18: You want: cm
        !            19: * 2.54
        !            20: / 0.393701
        !            21: .EE
        !            22: .PP
        !            23: Quantities are specified using the following grammar:
        !            24: .TP
        !            25: .IR Unit :
        !            26: .I Empty
        !            27: |\|
        !            28: .I Unit Term
        !            29: |\|
        !            30: .IB Unit " / " Term
        !            31: .TP
        !            32: .IR Term :
        !            33: .I Number
        !            34: |\|
        !            35: .I Name
        !            36: |\|
        !            37: .BI ( " Unit " )
        !            38: |\|
        !            39: .br
        !            40: .BI square " Term
        !            41: |\|
        !            42: .BI sq " Term
        !            43: |\|
        !            44: .BI cube " Term
        !            45: |\|
        !            46: .BI cu " Term
        !            47: |\|
        !            48: .br
        !            49: .IB Term " ^ " Number
        !            50: .ig
        !            51: .PP
        !            52: \fIUnit\fP:    \fIEmpty\fP
        !            53:        \fIUnit\fP \fITerm\fP
        !            54:        \fIUnit\fP \fL/\fP \fITerm\fP
        !            55: \fITerm\fP:    \fINumber\fP
        !            56:        \fIName\fP
        !            57:        \fL(\fP \fIUnit\fP \fL)\fP
        !            58:        \fLsquare\fP \fITerm\fP
        !            59:        \fLsq\fP \fITerm\fP
        !            60:        \fLcube\fP \fITerm\fP
        !            61:        \fLcu\fP \fITerm\fP
        !            62:        \fITerm\fP \fL^\fP \fINumber\fP
        !            63: .fi
        !            64: ..
        !            65: .PP
        !            66: Numbers are specified in the form expected by
        !            67: .IR atof (3).
        !            68: Names are maximal strings of non-numeric, non-punctuation characters.
        !            69: Powers are indicated by the 
        !            70: .L ^
        !            71: operator or by the words
        !            72: .L square
        !            73: .RL ( sq )
        !            74: and
        !            75: .L cube
        !            76: .RL ( cu ).
        !            77: Parentheses alter grouping.
        !            78: The empty unit has value 1.
        !            79: Terms are multiplied together unless connected by
        !            80: .L /
        !            81: for inversion, e.g.
        !            82: .LR "15 pounds force/sq in" .
        !            83: .PP
        !            84: Most familiar units,
        !            85: abbreviations, and metric prefixes are recognized,
        !            86: together with a generous leavening of exotica
        !            87: and a few constants of nature including:
        !            88: .IP
        !            89: .de fq
        !            90: \f5\\$1\\fP    \\$2 \\$3 \\$4 \\$5 \\$6
        !            91: ..
        !            92: .nf
        !            93: .fq pi ratio of circumference to diameter
        !            94: .fq c speed of light
        !            95: .fq e charge on an electron
        !            96: .fq g acceleration of gravity
        !            97: .fq force same as \f5g\fP
        !            98: .fq mole Avogadro's number
        !            99: .fq water "pressure head per unit height of water"
        !           100: .fq au astronomical unit
        !           101: .fi
        !           102: .PP
        !           103: The
        !           104: .L pound
        !           105: is a unit of
        !           106: mass.
        !           107: Compound names are run together, e.g.
        !           108: .LR lightyear .
        !           109: British units that differ from their US counterparts
        !           110: are prefixed thus:
        !           111: .LR brgallon .
        !           112: Currency is denoted
        !           113: .LR belgiumfranc ,
        !           114: .LR britainpound ,
        !           115: etc.
        !           116: .PP
        !           117: A response of 
        !           118: .L ?
        !           119: to `You want:' displays all known units
        !           120: conformable with the `You have:' quantity.
        !           121: .PP
        !           122: The complete list of units can be found in
        !           123: .F /usr/lib/Units
        !           124: and
        !           125: .FR /n/alice/usr/td/Monetary.units .
        !           126: .SH FILES
        !           127: .F /usr/lib/Units
        !           128: .br
        !           129: .F /n/alice/usr/td/Monetary.units
        !           130: .br
        !           131: .F /usr/lib/Units.bin
        !           132: .SH BUGS
        !           133: Since
        !           134: .I units
        !           135: does only multiplicative scale changes,
        !           136: it can convert Kelvin to Rankine, but not Centigrade to
        !           137: Fahrenheit.
        !           138: .br
        !           139: Currency conversions are only as accurate as the most recent report of
        !           140: foreign exchange prices from the AP wire.

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