But first, let me confirm if RedCAD 2.5 is a real product. A quick search in my database... Hmm, I don't recall any major CAD software by that name. It might be a very niche or region-specific software, or possibly a misspelling. Alternatively, the user might be referring to a different software with a similar name. Let me check if there's any alternative spelling or possible confusion with other CAD tools.