sclass CtxContext {
  // general for bot
  SS regexpMacros, globals;

  // per session
  S activeRule, activeAnalyzer;
  SS vars = new HashMap;
  
  S input;
  new StringBuilder newOutput;
  
  int conversationLength;
  bool jumpaway, thinkagain;
  S nextRule;
  int safetyCounter; // number of rules applied in step
  new L<S> rulesFired;
  new L<S> urlsToOpen;
  new L<S> matches; // MATCH1...
  
  void setActiveRule(S rule) {
    activeRule = rule;
    print("New active rule: " + rule);
  }
}