SO is the standard; DO is an option. It's on p.342. p.355 notes that 2d4*10% will take double occupancy.Make that "I'd like a consolidated set of comprehensive, self-consistent, versatile rules that aren't going to be ignored by the next version and that explicitly supercedes any previous versions that conflict with them".
Middle passage is double occupancy in T20? I never realized that.
Hans
Note that Mongoose set out ignoring everything that wasn't CT or Draft-T5.
T5 is technically older than T20.
No other edition is newer than T20, tho T5 wasn't actually completed until after, but was being worked on from before T20 being started.