So I'm making a free-floating clock (without face-background surface) And I
wanted to have the 4 big hour markers shine light to the centre of the object,
so I used point_at. But this yields this weird error:

Parse Error: Keyword 'point_at' cannot be used with standard light source.

aI don't know how to solve this, so I'd like some help please.

Source:
#while (counter<12)
  object
 {
  hourmark
  rotate z*(counter*30)
 }
 #declare counter=counter+1;
#end

#declare fourmark=light_source
{
 <0,3.7,0>, rgb <0,0,0>
 point_at <0,0,0> SPOTLIGHT_ITEM
looks_like
{
cone
{
 <0,3.7,0>,2, <0,4.5,0>,0.5
}
}
#declare counter=0;
#while counter<4
 #declare counter=counter+1;
 object
{
 fourmark
 rotate z*(counter*30)
}
#end

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