from level template at same playfield position when loaded (currently
not accessible from level editor, but only used for special Sokoban
level conversion when using "special_flags: load_xsb_to_ces")
+ * added special behaviour for "special_flags: load_xsb_to_ces": global
+ settings of individual level files are overwritten by template level
2010-01-07
* added handling of gravity ports when converting Supaplex style R'n'D