Lisp for rounding up drawing measurements to the next whole cm

Dear All,

I'm new to LISP.

I'd like to create a lisp that would check my drawings for stray vertices (I only draw in full mesurments per UCS), and automatically round them up to the closest whole value, or at least mark them up in circles for manually fixing them.

Any ideas or references for how to begin?

Thanks and best regards,

Itai.

P.s

The office uses ACAD2006

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