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-rw-r--r--share/doc/ps1/08.ipc/1.t6
1 files changed, 4 insertions, 2 deletions
diff --git a/share/doc/ps1/08.ipc/1.t b/share/doc/ps1/08.ipc/1.t
index 28379363a4b8..e500a6df76b2 100644
--- a/share/doc/ps1/08.ipc/1.t
+++ b/share/doc/ps1/08.ipc/1.t
@@ -36,16 +36,18 @@
.\".ds RF "Leffler/Fabry/Joy
.\".ds LF "\*(DY
.\".ds CF "
-.nr H1 1
+.\".nr H1 1
.LP
.bp
.LG
.B
.ce
-1. INTRODUCTION
+.NH 1
+INTRODUCTION
.sp 2
.R
.NL
+.PP
One of the most important additions to UNIX in 4.2BSD was interprocess
communication.
These facilities were the result of