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Diffstat (limited to 'usr.bin/learn/lib/eqn/L6.1a')
| -rw-r--r-- | usr.bin/learn/lib/eqn/L6.1a | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/usr.bin/learn/lib/eqn/L6.1a b/usr.bin/learn/lib/eqn/L6.1a deleted file mode 100644 index fc51f1fa4b6..00000000000 --- a/usr.bin/learn/lib/eqn/L6.1a +++ /dev/null @@ -1,60 +0,0 @@ -#once #create message -.ND -.tr %$ -.EQ -delim $$ -.EN -.LP -So far every equation you have typed in -has been "displayed" - neatly centered or indented, and -offset from the surrounding text. -But not all equations are like that. -Very often they appear right in the middle of -running text as subscripts like $x sub i$ or special characters -like $pi$ or $partial$. How are these done? - -The idea is this. Two characters (which may be identical) -are set aside as "delimiters". When the -left delimiter is seen anywhere in ___any line, -it marks the beginning of an in-line equation. -The end is marked by the right delimiter. Between the -delimiters, all the normal rules of neqn apply. - -Suppose we say the delimiters are % signs. -Then to get $pi$, you have to type %pi%. - -To make sure that you can do this much, find the -$pi$, $alpha$ and $sum$ characters in "Example" -and make them into in-line equations. -Use % and % as the delimiter characters. -(This is the most frequent choice, by the way.) -Type "ready" when you're done. -.pl 1 -#once #create Ref -.EQ -delim $$ -.EN -.LP -This line contains some $pi$ and $alpha$ Greek -and $sum$ as well. Don't forget that spaces -inside dollar signs are ignored, while spaces -outside them are significant. -.pl 1 -#once #create Example -.EQ -delim $$ -.EN -.LP -This line contains some pi and alpha Greek -and sum as well. Don't forget that spaces -inside dollar signs are ignored, while spaces -outside them are significant. -.pl 1 -#once neqn Ref | nroff >X1 & -#once neqn message Ref | nroff -T$term %s/tinyms - -#user -neqn Example | nroff >X2 -#cmp X1 X2 -#log -#next -6.1b |