I don't know if defined, but different areas might need (or not) to avoid the use of RTO. e.g. at LHR, P2 handling, the TLs advanced to stabilise the engines prior to setting TO power, and aircraft rolling, when aircraft just airborne stated they may have had a birdstrike. Close TLs, stop aircraft, rolled all of 50x, performance not a factor, so after runway inspection, went from there
Not a "RTO" IMHO, since that would equate to lots of paperwork
