Rewrite page(2) references to page(3).
Add description of new libmach.
diff --git a/man/man3/pipe.3 b/man/man3/pipe.3
index 85bdfb2..e47da6a 100644
--- a/man/man3/pipe.3
+++ b/man/man3/pipe.3
@@ -25,7 +25,7 @@
After the pipe has been established,
cooperating processes
created by subsequent
-.IR fork (2)
+.IR fork (3)
calls may pass data through the
pipe with
.I read
@@ -41,7 +41,7 @@
of a write, whichever comes first.
.PP
The number of bytes available to a
-.IR read (2)
+.IR read (3)
is reported
in the
.B Length
@@ -50,17 +50,17 @@
or
.I dirfstat
on a pipe (see
-.IR stat (2)).
+.IR stat (3)).
.PP
When all the data has been read from a pipe and the writer has closed the pipe or exited,
-.IR read (2)
+.IR read (3)
will return 0 bytes. Writes to a pipe with no reader will generate a note
.BR "sys: write on closed pipe" .
.SH SOURCE
.B /sys/src/libc/9syscall
.SH SEE ALSO
-.IR intro (2),
-.IR read (2),
+.IR intro (3),
+.IR read (3),
.IR pipe (3)
.SH DIAGNOSTICS
Sets
