Rewrite page(2) references to page(3).
Add description of new libmach.
diff --git a/man/man3/allocimage.3 b/man/man3/allocimage.3
index f7eb2ff..eb55055 100644
--- a/man/man3/allocimage.3
+++ b/man/man3/allocimage.3
@@ -191,7 +191,7 @@
for example they provide the mechanism behind
.B getwindow
(see
-.IR graphics (2)).
+.IR graphics (3)).
.PP
The RGB values in a color are
.I premultiplied
@@ -333,8 +333,8 @@
.SH SOURCE
.B /sys/src/libdraw
.SH "SEE ALSO"
-.IR graphics (2),
-.IR draw (2),
+.IR graphics (3),
+.IR draw (3),
.IR draw (3),
.IR image (6)
.SH DIAGNOSTICS
