Create wiki documentation for IS:etcsLevelTransition
The ETCS working group created a draft documentation for the railML 3 element etcsLevelTransition. It also includes information on the subelement switchToLevel. From this a wiki documentation shall be created.
ETCS Working group document: https://cloud.railml.org/f/89860
Wiki pages: https://wiki3.railml.org/wiki/IS:etcsLevelTransition and https://wiki3.railml.org/wiki/IS:switchToLevel