import BTL learn(1) lessons/eqn

1 files changed, 34 insertions, 0 deletions

diff --git a/usr.bin/learn/lib/eqn/L2.1e b/usr.bin/learn/lib/eqn/L2.1e
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index 00000000000..bf6eb69e147
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+++ b/usr.bin/learn/lib/eqn/L2.1e
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+#once #create message
+.ND
+.PP
+For practice, in this directory there is a file called
+"Example".  It contains an equation.  Make it
+look like this:
+.EQ
+int from i to j f( pi ) ~=~ LAMBDA (x)
+.EN
+by changing the character names as appropriate
+and adding spaces where needed.
+Type "ready" when you're satisfied.
+.pl 1
+#once neqn message | nroff -T$term %s/tinyms -
+#once #create Ref
+.LP
+.EQ
+int from i to j f( pi ) ~=~ LAMBDA (x)
+.EN
+.pl 1
+#once #create Example
+.LP
+.EQ
+sum from i to j f(q) = lambda (x)
+.EN
+.pl 1
+#once neqn Ref | nroff >X2 &
+#user
+neqn Example | nroff >X1
+#cmp X1 X2
+#log
+#next
+2.1f 10
+2.2e 5