Rewrite page(2) references to page(3).
Add description of new libmach.
diff --git a/man/man3/ioproc.3 b/man/man3/ioproc.3
index b6f1ce5..9753b90 100644
--- a/man/man3/ioproc.3
+++ b/man/man3/ioproc.3
@@ -68,10 +68,10 @@
are execute the
similarly named library or system calls
(see
-.IR open (2),
-.IR read (2),
+.IR open (3),
+.IR read (3),
and
-.IR dial (2))
+.IR dial (3))
in the slave process associated with
.IR io .
It is an error to execute more than one call
@@ -172,8 +172,8 @@
.SH SOURCE
.B /sys/src/libthread/io*.c
.SH SEE ALSO
-.IR dial (2),
-.IR open (2),
-.IR read (2),
-.IR thread (2)
+.IR dial (3),
+.IR open (3),
+.IR read (3),
+.IR thread (3)
