rm64

Could you clarify what rm64 refers to? The term could denote different things in various domains (for example a software project, a hardware or instruction-set variant, a file format, or another concept). If you specify the intended domain or provide a source, I can draft a concise, neutral wiki-style article under 300 words tailored to that context. If rm64 is a hypothetical or fictional term, I can also create a generic encyclopedic entry outlining its assumed scope and use.