I think there's no so much need for a #for statemen, but what I want to
see in a future version of povray is a do-while statement, like this:

#do
  (something that will be made at least 1 time)
  (make some calculations)
#while(condition)

  It's tedious to type:

(make some calculations)
#while(condition)
  (something that will be made at least 1 time)
  (make the same calculations here)
#end

  And of course some operators would be handy:

#declare Index+=1;
#declare PosX*=1.5;
#declare PosY/=2;
#declare PosZ-=10;

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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