private void removeIgnore(RPObject ignoreObj){
  for (  String attr : ignoreObj) {
    if (attr.charAt(0) == '_') {
      ignore.remove(attr.substring(1));
    }
  }
}

private void removeIgnore ( RPObject ignoreObj ) { for ( String attr : ignoreObj ) { if ( attr . charAt ( 0 ) == '_' ) { ignore . remove ( attr . substring ( 1 ) ) ; } } }
remove players from the set of ignored players . player names are the attributes prefixed with ' _ ' .
