static void ctxProcessStatement(L<S> tok) {
  tok = ctxStringProcessing(tok);
  
  if (jfind(tok, "<id> = true;") == 1) {
    ctxSetVar(tok.get(1), "true");
    ctxProcessAction(subList(tok, 8));
    ret;
  }
  
  if (jfind(tok, "string <id> = ") == 1)
    tok = subList(tok, 2);
    
  if (jfind(tok, "<id> = ") == 1) {
    int semicolon = tok.indexOf(";");
    CtxExpr e = ctxParseExpression(join(subList(tok, 5, semicolon-1)));
    ctxSetVar(tok.get(1), e.str());
    ctxProcessAction(subList(tok, semicolon+1));
    ret;
  }
  
  if (jfind(tok, "agent.say(*);") == 1 && isQuoted(tok.get(9))) {
    ctxAppendOutput(unquoteCtx(tok.get(9)));
    ctxProcessAction(subList(tok, 14));
    ret;
  }
  
  if (jmatch("jumpaway();", tok)) {
    print("jumpaway.");
    ctxContext().jumpaway = true;
    ret;
  }
  
  if (jmatch("thinkagain();", tok)) {
    print("thinkagain.");
    ctxContext().thinkagain = true;
    ret;
  }
  
  if (jfind(tok, "agent.openUrl(*);") == 1) {
    S url = ctxGetVar(tok.get(9));
    ctxContext().urlsToOpen.add(url);
    ctxProcessAction(subList(tok, 14));
    ret;
  }
  
  print("ctxProcessStatement unknown: " + structForUser(join(tok)));
}