Rewrite page(2) references to page(3).
Add description of new libmach.
diff --git a/man/man3/draw.3 b/man/man3/draw.3
index 3cf27ec..31baacb 100644
--- a/man/man3/draw.3
+++ b/man/man3/draw.3
@@ -261,7 +261,7 @@
it is identically
.B chantodepth(chan)
(see
-.IR graphics (2))
+.IR graphics (3))
and is provided as a convenience.
The value should not be modified after the image is created.
.TP
@@ -705,7 +705,7 @@
is to
.B atan
(see
-.IR sin (2)).
+.IR sin (3)).
.TP
.BI border( dst\fP,\fP\ r\fP,\fP\ i\fP,\fP\ color\fP,\fP\ sp\fP)
.I Border
@@ -803,11 +803,11 @@
.SH SOURCE
.B /sys/src/libdraw
.SH SEE ALSO
-.IR graphics (2),
-.IR stringsize (2),
+.IR graphics (3),
+.IR stringsize (3),
.IR color (6),
.IR utf (6),
-.IR addpt (2)
+.IR addpt (3)
.PP
T. Porter, T. Duff.
``Compositing Digital Images'',
