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Annotation of src/share/me/eqn.me, Revision 1.1

1.1     ! deraadt     1: .nr _0 \n(c.
        !             2: .\" Copyright (c) 1988 The Regents of the University of California.
        !             3: .\" All rights reserved.
        !             4: .\"
        !             5: .\" Redistribution and use in source and binary forms, with or without
        !             6: .\" modification, are permitted provided that the following conditions
        !             7: .\" are met:
        !             8: .\" 1. Redistributions of source code must retain the above copyright
        !             9: .\"    notice, this list of conditions and the following disclaimer.
        !            10: .\" 2. Redistributions in binary form must reproduce the above copyright
        !            11: .\"    notice, this list of conditions and the following disclaimer in the
        !            12: .\"    documentation and/or other materials provided with the distribution.
        !            13: .\" 3. All advertising materials mentioning features or use of this software
        !            14: .\"    must display the following acknowledgement:
        !            15: .\"    This product includes software developed by the University of
        !            16: .\"    California, Berkeley and its contributors.
        !            17: .\" 4. Neither the name of the University nor the names of its contributors
        !            18: .\"    may be used to endorse or promote products derived from this software
        !            19: .\"    without specific prior written permission.
        !            20: .\"
        !            21: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22: .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23: .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24: .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25: .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27: .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28: .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29: .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30: .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31: .\" SUCH DAMAGE.
        !            32: .\"
        !            33: .\"    @(#)eqn.me      5.1 (Berkeley) 4/17/91
        !            34: .\"
        !            35: .\"    %beginstrip%
        !            36: .\"
        !            37: .de EQ                 \" *** equation start
        !            38: .ec
        !            39: .if !\\n(?e \
        !            40: \{\
        !            41: .      if "\\n(.z"|e" .tm Line \\n(c. -- Nested .EQ request
        !            42: .      @D 1 "\\$1" "\\$2"
        !            43: .      @C 2
        !            44: .      di |e
        !            45: .\}
        !            46: .ls 1
        !            47: .in 0
        !            48: .nf
        !            49: ..
        !            50: .de EN                 \" *** equation end
        !            51: .br
        !            52: .ie "\\$1"C" \
        !            53: \{\
        !            54: .      nr ?e 1
        !            55: .      sp \\n(esu
        !            56: .\}
        !            57: .el \
        !            58: \{\
        !            59: .      nr ?e 0
        !            60: .      di
        !            61: .      if \\n(dn \
        !            62: .              @q              \" actual equation output
        !            63: .      rm |e
        !            64: .      rm 10
        !            65: .      rm 11
        !            66: .      rm 12
        !            67: .      rm 13
        !            68: .      rm 14
        !            69: .      rm 15
        !            70: .      rm 16
        !            71: .      rm 17
        !            72: .      rm 18
        !            73: .      rm 19
        !            74: .      rm 20
        !            75: .      rm 21
        !            76: .      rm 22
        !            77: .      rm 23
        !            78: .      ev
        !            79: .\}
        !            80: ..
        !            81: .de @q                 \" --- equation output
        !            82: .nr _Q \\n(dnu
        !            83: .ev
        !            84: .sp \\n(esu                    \" output rest of preceeding text
        !            85: .@C 2                          \" .ev 2 may be jumbled from header
        !            86: .ie \\n(_d=1 \
        !            87: .      in (\\n(.lu+\\n($iu-\\n(dlu)/2u
        !            88: .el .ie \\n(_d=2 \
        !            89: .      in \\n($iu
        !            90: .el .ie \\n(_d=3 \
        !            91: .      in \\n(biu+\\n($iu
        !            92: .el .if \\n(_d=4 \
        !            93: .      in 0
        !            94: .if !"\\n(.z"" \!.ne \\n(_Qu
        !            95: .ne \\n(_Qu+\n(.Vu             \" keep it on one page
        !            96: .mk _q
        !            97: .if \n@>1 .tm --@e: _Q=\\n(_Q _q=\\n(_q nl=\\n(nl |p=\\*(|p
        !            98: .if !"\\*(|p"" \
        !            99: \{\
        !           100: .      rs
        !           101: .      sp (\\n(_Qu-\\n(.vu)/2u
        !           102: .      tl """\\*(|p"
        !           103: .      rt \\n(_qu
        !           104: .\}
        !           105: .|e
        !           106: .sp |\\n(_qu+\\n(_Qu
        !           107: .sp \\n(esu+\\n(.Lv-1v
        !           108: .rr _q
        !           109: .rr _Q
        !           110: ..
        !           111: .nr c. \n(_0