Basically Dragon is based upon Japanese Go rules. With the exception of predeterming the placement of handicap stones, the board size and time limits. These Dragon-suggested defaults do not follow the official Japanese Go rules, but seem to be useful turn-based default values...
 
In short, Dragon

• uses territory scoring based on the players' evaluation of the board,
  
• has no superko rule,
  
• forbids suicide, and
  
• allows the free placement of handicap stones.
  However Dragon defaults to use a Standard handicap placement of stones.