+/** A hash of commands used by the core
+ */
+typedef TR1NS::unordered_map<std::string, Command*> Commandtable;
+
+/** Membership list of a channel */
+typedef std::map<User*, Membership*> UserMembList;
+/** Iterator of UserMembList */
+typedef UserMembList::iterator UserMembIter;
+/** const Iterator of UserMembList */
+typedef UserMembList::const_iterator UserMembCIter;
+
+/** Generic user list, used for exceptions */
+typedef std::set<User*> CUList;
+
+/** A set of strings.
+ */
+typedef std::vector<std::string> string_list;
+
+/** Contains an ident and host split into two strings
+ */
+typedef std::pair<std::string, std::string> IdentHostPair;
+
+/** A map of xline factories
+ */
+typedef std::map<std::string, XLineFactory*> XLineFactMap;
+
+/** A map of XLines indexed by string
+ */
+typedef std::map<irc::string, XLine *> XLineLookup;
+
+/** A map of XLineLookup maps indexed by string
+ */
+typedef std::map<std::string, XLineLookup > XLineContainer;
+
+/** An iterator in an XLineContainer
+ */
+typedef XLineContainer::iterator ContainerIter;
+
+/** An interator in an XLineLookup
+ */
+typedef XLineLookup::iterator LookupIter;