# Resolving ISA conflicts and providing a pain-free RISC-V Standards Upgrade Path
-**Executive Summary:** A non-invasive backwards-compatible change to make
+## Executive Summary
+
+A non-invasive backwards-compatible change to make
mvendorid and marchid being read-only to be a formal declaration of an
architecture having no Custom Extensions, and being permitted to be
WARL in order to support multiple simultaneous architectures on the
permanently fixes the problem of clashes in Custom Extension opcodes
on a global basis.
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+## Introduction
In a lengthy thread that ironically was full of conflict indicative
of the future direction in which RISC-V will go if left unresolved,