+
+/*
+ -----------------------------------------------------------------------------
+ definition of elements used in the Emerald Mine Club engine;
+ the element names have the following properties:
+ - elements that start with an 'X' can be stored in a level file;
+ - elements that start with an 'Y' indicate moving elements;
+ - elements that end with a 'B' are the "backside" of a moving element.
+ -----------------------------------------------------------------------------
+*/
+