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Question 1 (there was no question :) ):<br>
I think the problem is, that you fuse the <font
class="Apple-style-span" color="#000000">psSurface with nothing else.
I don`t know if it is what you want, but <br>
<br>
\psSolid[<br>
object=load,<br>
action=draw**,<br>
load=graphsurf,<br>
]<br>
<br>
instead of<br>
<br>
</font>
<div><font color="#000000">></font><span class="Apple-tab-span"
style="white-space: pre;"><font class="Apple-style-span"
color="#000000"> </font></span><font class="Apple-style-span"
color="#000000">\psSolid[</font></div>
<div><font color="#000000">></font><span class="Apple-tab-span"
style="white-space: pre;"><font class="Apple-style-span"
color="#000000"> </font></span><font class="Apple-style-span"
color="#000000">object=fusion,</font></div>
<div><span class="Apple-tab-span" style="white-space: pre;"><font
class="Apple-style-span" color="#000000">> </font></span><font
class="Apple-style-span" color="#000000">action=draw**,</font></div>
<div><span class="Apple-tab-span" style="white-space: pre;"><font
class="Apple-style-span" color="#000000">> </font></span><font
class="Apple-style-span" color="#000000">base=graphsurf,</font></div>
<div><span class="Apple-tab-span" style="white-space: pre;"></span><font
class="Apple-style-span" color="#000000">> ]</font></div>
<br>
<font class="Apple-style-span" color="#000000">should work.<br>
<br>
Question 2:</font><br>
> <font class="Apple-style-span" color="#000000">\defFunction[algebraic]{curvey}(t){0.5-1.5*t^2}{}{}</font><br>
<br>
Empty brases are to be provided with a null.<br>
<font class="Apple-style-span" color="#000000">\defFunction[algebraic]{curvey}(t){0.5-1.5*t^2}{0}{0}</font><br>
<br>
And you have to use \psSolid instead of \psProjection.<br>
<br>
Florian
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