<div dir="ltr"><div><div>Greetings,<br><br></div>Is dx_dy, dy_dx = (0,0)<br></div>The Top Left/Right value??<br clear="all"><div><div><br>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><p style="margin:0cm 0cm 0pt"><span style="font-family:Calibri;font-size:8pt"> Regards,</span></p><p style="margin:0cm 0cm 0pt"><span style="font-family:Calibri;font-size:8pt"><br></span></p><p style="margin:0cm 0cm 0pt"><span style="font-family:Calibri;font-size:8pt">Clive Swan</span></p>
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