--- mlib-pdf.tex.orig	2009-03-25 17:26:53.000000000 +0200
+++ mlib-pdf.tex	2009-03-25 17:27:04.000000000 +0200
@@ -26,7 +26,7 @@
    \xdef\MPheight{\the\dimexpr#4\onebasepoint-#2\onebasepoint\relax}}
 
 \def\startMPLIBtoPDF#1#2#3#4% watch the transparency reset
-  {\hbox\bgroup
+  {\hbox dir TLT\bgroup
    \MPLIBboundingbox{#1}{#2}{#3}{#4}%
    \forgetall
    \setbox\scratchbox\vbox\bgroup