hovering a ship

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Okay I think I understand that - just!

But the reference guide describes the command as "Returns the first entity between x,y,z to x+dx,y+dy,z+dz. ". How the hell do you measure with it then? I assume it is used like this: "result=linepicks 0,0,0,0,-100,0" In which case what would it return as a result?

The effect you desicribe is on par with what I would like to acheive (although my ship is not square/circular but that shouldn't make much difference from what I can tell). I still cannot see how this command would acheive that result.

Can you tell me how to use it to do this and give a line or two of code that explains the command as there is no example in the help file or online help :( I am still totaly lost with regards to this command...

Thanks

Max