Because of the local conditions in Meiningen it was necessary to improve the rules.
The changes in the rules are explained in the following sentences. As you may remember every team (12hour und 24hour) started with 6 Theme Courses (TH). The first course will be a difficult course (TH1). After that the remaining 5 theme courses can be run in any desired order. In the competition the courses will be run in the known order: daytime courses, twilight courses, night courses and at the end one final course.
The courses with high orienteering level will get the abbreviation H for hard. The other courses with low orienteering level will have the abbreviation E for easy.
The new rules are here.