summaryrefslogtreecommitdiff
path: root/usr.bin/learn/lib/eqn/L9.2a
diff options
context:
space:
mode:
Diffstat (limited to 'usr.bin/learn/lib/eqn/L9.2a')
-rw-r--r--usr.bin/learn/lib/eqn/L9.2a31
1 files changed, 31 insertions, 0 deletions
diff --git a/usr.bin/learn/lib/eqn/L9.2a b/usr.bin/learn/lib/eqn/L9.2a
new file mode 100644
index 00000000000..8d1e6cd111f
--- /dev/null
+++ b/usr.bin/learn/lib/eqn/L9.2a
@@ -0,0 +1,31 @@
+#once #create message
+.ND
+.tr %$
+.EQ
+delim $$
+.EN
+.LP
+Modify "Example" to produce output that looks like this,
+then type "ready".
+.pl 1
+#once #create Ref
+.LP
+.EQ
+x bar ~=~ E(x) bar ~/~ E( x bar )
+.EN
+.pl 1
+#once #create Example
+.LP
+.EQ
+xxxx
+.EN
+.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
+9.1b 10