The Ice States wrote:Why not just "non-preambulatory clause" instead of "operative clause" in this rule? Or perhaps, "No proposal clause outside of the preamble may depend on...".
Definitions clauses have sometimes historically been placed into the preamble. Eg GA 114, GA 136, etc. We don't allow definitions to refer to previous resolutions. In general, the reason why we should prefer functional definitions to structural ones is that the structure of resolutions has changed and should be allowed to change.