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Annotation of 43BSDReno/usr.bin/learn/learnlib/eqn/L9.1a, revision 1.1

1.1     ! root        1: #once #create message
        !             2: .ND
        !             3: .tr %$
        !             4: .EQ
        !             5: delim $$
        !             6: .EN
        !             7: .LP
        !             8: The next step is to learn about "diacriticals", which
        !             9: is a big word for funny marks on symbols, like
        !            10: a bar over something ($x bar$), or a tilde or hat on
        !            11: something ($x tilde ,~a hat$), or perhaps a dot 
        !            12: or dotdot ($T dot ,~U dotdot$), or even an
        !            13: underlining like $abc under$.
        !            14: 
        !            15: These are all easy.  Each funny character
        !            16: has a name, and all you have to do is put the name
        !            17: after the thing you want the character on.
        !            18: Thus
        !            19:   x hat makes $x hat$
        !            20:   y bar makes $y bar$
        !            21:   T dot makes $T dot$
        !            22:   x tilde makes $x tilde$ (notice that we spell tilde)
        !            23:   u dotdot makes $u dotdot$ (looks ugly on a terminal)
        !            24: .br
        !            25: and
        !            26:   i under makes $i under$.
        !            27: 
        !            28: Except for "bar" and "under", these are almost always
        !            29: attached to just a single letter.
        !            30: If you want to put a bar over something longer, like
        !            31: ${2 pi +1} bar$, simply enclose the thing in braces:
        !            32: 
        !            33:   {2 pi +1} bar
        !            34: 
        !            35: Modify "Example" to produce output that looks like this,
        !            36: then type "ready".
        !            37: .pl 1
        !            38: #once #create Ref
        !            39: .EQ
        !            40: delim $$
        !            41: .EN
        !            42: .LP
        !            43: Let $x bar$, $y bar$, and $z bar$ be the components of $pi bar$.
        !            44: Let ${alpha +1} bar$ be the mean value of $alpha hat$.
        !            45: .pl 1
        !            46: #once #create Example
        !            47: .EQ
        !            48: delim $$
        !            49: .EN
        !            50: .LP
        !            51: Let x bar, y bar, and z bar be the components of pi bar.
        !            52: Let alpha +1 bar be the mean value of alpha hat.
        !            53: .pl 1
        !            54: #
        !            55: #once neqn Ref | nroff >X1 &
        !            56: #once neqn message Ref | nroff -T$term %s/tinyms -
        !            57: #user
        !            58: neqn Example | nroff >X2
        !            59: #cmp X1 X2
        !            60: #fail
        !            61: Don't forget to set delimiters at the beginning,
        !            62: and get the spaces right around the dollar signs.
        !            63: #log
        !            64: #next
        !            65: 9.1b 10
        !            66: 9.2a 5

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