Rewrite page(2) references to page(3).
Add description of new libmach.
diff --git a/man/man3/runestrcat.3 b/man/man3/runestrcat.3
index 57c587c..a793835 100644
--- a/man/man3/runestrcat.3
+++ b/man/man3/runestrcat.3
@@ -56,12 +56,12 @@
.SH DESCRIPTION
These functions are rune string analogues of
the corresponding functions in
-.IR strcat (2).
+.IR strcat (3).
.SH SOURCE
.B /sys/src/libc/port
.SH SEE ALSO
-.IR memory (2),
-.IR rune (2),
-.IR strcat (2)
+.IR memory (3),
+.IR rune (3),
+.IR strcat (3)
.SH BUGS
The outcome of overlapping moves varies among implementations.
