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On line 58 of <b>pstricks-add.tex</b> the symbol \Pi is defined as
3.14159265.<br>
<br>
This caused me problems when using \Pi as a symbol in equations. I
recommend that this be remedied in pstricks-add by not using LaTeX
keywords for constants.<br>
<br>
Regards,<br>
Patrick Egan.<br>
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