use macro for /usr/local/plan9
diff --git a/man/man1/news.1 b/man/man1/news.1
index bce5e18..bd9faf2 100644
--- a/man/man1/news.1
+++ b/man/man1/news.1
@@ -60,4 +60,4 @@
 .B /sys/lib/subscribers
 who gets news mailed to them
 .SH SOURCE
-.B /usr/local/plan9/src/cmd/news.c
+.B \*9/src/cmd/news.c