anchor.diff:                end,
       RT = {lists:append([
           "create ",
  -        if length(OptsStr) > 0 -> OptsStr ++ " "; true -> "" end,
  +        if length(OptsStr) > 0 -> OptsStr ++ " "; true -> [] end,
           "table ",
           TabStr,
           " (",
  
positive.code:                   top_down -> NewCtx2;
                    bottom_up -> Fun(ST, NewCtx2)
                end,
      RT = {lists:flatten([string:strip(AStr), C, binary_to_list(B)]), NewCtx3},
      ?debugFmt(?MODULE_STRING ++ ":fold ===> ~n RT: ~p~n", [RT]),
      RT;
  fold(FType, Fun, Ctx, _Lvl, {as, A} = ST)
  
negative.code:                   top_down -> NewCtx2;
                    bottom_up -> Fun(ST, NewCtx2)
                end,
      RT = {lists:flatten([AStr, C, binary_to_list(B)]), NewCtx3},
      ?debugFmt(?MODULE_STRING ++ ":fold ===> ~n RT: ~p~n", [RT]),
      RT;
  fold(FType, Fun, Ctx, Lvl, {as, A, B, C} = ST)
  