EDIT St. Andrew’s Cross Also called crux decussata, a saltire or St. Andrew\'s Cross is a symbol in the form of a diagonal cross. Its name is purported to derive from a cross of similar shape (a crux decussata) on which St. Andrew is said to have been crucified.
As a heraldic symbol, this cross forms the flags of Scotland and Ireland (and thus appear in the British one, too), Jamaica and a number of others.
As a traditional symbol of the Russian Orthodox church, it is part of the imperial Russian flag.
As cross of Burgundy, the red saltire symbolises the Spanish Carlist movement.

In road signage, the St. Andrew\'s Cross is used in UK railway signalling for the Automatic Warning System, as well as, on German roads, at railway crossings.

In chemistry, a black St. Andrew\'s Cross on an orange background is used as a hazard symbol indicating irritating (Xi) or noxious (Xn) substances.

In the BDSM scene, this symbol is used in the context of bondage and sadomasochist play.

 4.229.63.158  :  oda07