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diff --git a/usr.bin/learn/lib/eqn/tinyms b/usr.bin/learn/lib/eqn/tinyms
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+.\" short set of macros to simulate behavior of
+.\" most common -ms macros:
+.\" .PP, .LP, .EQ, .EN
+.\"
+.de PP
+.br
+.sp
+.ll 60n
+.fi
+.ti +5n
+..
+.de LP
+.br
+.sp
+.ll 60n
+.fi
+..
+.de EQ
+.sp
+.ce
+..
+.de EN
+.sp
+..