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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">The project below works (almost) as expected, but I have three small questions:</font></div>

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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">1) When ghostview begins to draw, a strange ',f23false' appears on the sceen. Why?</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">2) Replacing the line</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\psSolid[object=cylindre,r=rcyl,h=hcyl,ngrid=1 </font><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;">24</font><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">,plansepare={[nx ny nz 0]},name=partiescylindre,action=none](0,0,-4)</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">with</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\psSolid[object=cylindre,r=rcyl,h=hcyl,ngrid=1 </font><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">48</font><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">,plansepare={[nx ny nz 0]},name=partiescylindre,action=none](0,0,-4)</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">makes the image not-so-perfect. Is that a bug or are only divisors of 360 permitted values of the second parameter of ngrid?</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">3) I would like to replace</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\psSolid[object=cylindre,r=rcyl,h=hcyl,ngrid=1 24,plansepare={[nx ny nz 0]},name=partiescylindre,action=none]</font><font face="Arial" size="+0" color="#0000DD" style="font-family:Arial;font-size:10pt;color:#0000DD;">(0,0,-4)</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">with something like</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\psSolid[object=cylindre,r=rcyl,h=hcyl,ngrid=1 24,plansepare={[nx ny nz 0]},name=partiescylindre,action=none]</font><font face="Arial" size="+0" color="#DD0000" style="font-family:Arial;font-size:10pt;color:#DD0000;">(!0 0 -hcut)</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">This seems not to be allowed?</font></div>

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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">Poul Riis</font></div>

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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\documentclass{article}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\parindent0pt</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\pagestyle{empty}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\textwidth12cm</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\usepackage[gray,cmyk]{pstricks}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\usepackage{pst-3dplot}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\usepackage{pst-func}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\usepackage{pst-solides3d}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\usepackage[x11names]{xcolor}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\usepackage{pstricks-add}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\usepackage{amsmath,amsfonts}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\definecolor{pureblack}{cmyk}{0 0 0 1}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\usepackage{siunitx}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\usepackage{comma}</font></div>

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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\begin{document}</font></div>

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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\begin{pspicture}[solidmemory](-4,-5)(7,4)</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\psset{viewpoint=50 -40 10 rtp2xyz,Decran=50,linecolor=red,lightsrc=viewpoint}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\psset{solidmemory}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\pstVerb{/phi 30 def /cosphi phi cos def /sinphi phi sin def /nx sinphi def /ny 0 def /nz cosphi def /rcyl 3 sqrt 4 mul def /hcut rcyl sinphi mul cosphi div def /hcyl hcut 2 mul def}</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\psSolid[object=cylindre,r=rcyl,h=hcyl,ngrid=1 24,plansepare={[nx ny nz 0]},name=partiescylindre,action=none](0,0,-4)</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\psSolid[object=load,load=partiescylindre1,fillcolor={[rgb]{0.7 1 0.7 }},fcol=0 (1 1 0.7 setrgbcolor)]</font></div>

<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\end{pspicture}</font></div>

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<div align="left" style="text-align:left;"><font face="Arial" size="+0" color="#000000" style="font-family:Arial;font-size:10pt;color:#000000;">\end{document}</font></div>

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