Return to L6.1a CVS log

Up to [CSRG BSD Unix] / 43BSDTahoe / usr.lib / learn / eqn

Annotation of 43BSDTahoe/usr.lib/learn/eqn/L6.1a, revision 1.1

1.1     ! root        1: #once #create message
        !             2: .ND
        !             3: .tr %$
        !             4: .EQ
        !             5: delim $$
        !             6: .EN
        !             7: .LP
        !             8: So far every equation you have typed in
        !             9: has been "displayed" - neatly centered or indented, and
        !            10: offset from the surrounding text.
        !            11: But not all equations are like that.
        !            12: Very often they appear right in the middle of
        !            13: running text as subscripts like $x sub i$ or special characters
        !            14: like $pi$ or $partial$.  How are these done?
        !            15: 
        !            16: The idea is this.  Two characters (which may be identical)
        !            17: are set aside as "delimiters".  When the
        !            18: left delimiter is seen anywhere in ___any line,
        !            19: it marks the beginning of an in-line equation.
        !            20: The end is marked by the right delimiter.  Between the
        !            21: delimiters, all the normal rules of neqn apply.
        !            22: 
        !            23: Suppose we say the delimiters are % signs.
        !            24: Then to get $pi$, you have to type %pi%. 
        !            25: 
        !            26: To make sure that you can do this much, find the
        !            27: $pi$, $alpha$ and $sum$ characters in "Example"
        !            28: and make them into in-line equations.
        !            29: Use % and % as the delimiter characters.
        !            30: (This is the most frequent choice, by the way.)
        !            31: Type "ready" when you're done.
        !            32: .pl 1
        !            33: #once #create Ref
        !            34: .EQ
        !            35: delim $$
        !            36: .EN
        !            37: .LP
        !            38: This line contains some $pi$ and $alpha$ Greek
        !            39: and $sum$ as well.  Don't forget that spaces
        !            40: inside dollar signs are ignored, while spaces
        !            41: outside them are significant.
        !            42: .pl 1
        !            43: #once #create Example
        !            44: .EQ
        !            45: delim $$
        !            46: .EN
        !            47: .LP
        !            48: This line contains some pi and alpha Greek
        !            49: and sum as well.  Don't forget that spaces
        !            50: inside dollar signs are ignored, while spaces
        !            51: outside them are significant.
        !            52: .pl 1
        !            53: #once neqn Ref | nroff >X1 &
        !            54: #once neqn message Ref | nroff -T$term %s/tinyms -
        !            55: #user
        !            56: neqn Example | nroff >X2
        !            57: #cmp X1 X2
        !            58: #log
        !            59: #next
        !            60: 6.1b

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.