Formal specification (PDF, in Slovak) that contains drawings with dimensions, rules for stacking of multiple markers, shapes, etc.: http://www.jazdecka-turisti

Formal specification (PDF, in Slovak) that contains drawings with dimensions, rules for stacking of multiple markers, shapes, etc.: http://www.jazdecka-turistika.sk/images/stories/dokumenty/KTS_norma_STN_01_8025.pdf http://www.jazdecka-turistika.sk/images/stories/dokumenty/KT... EDIT: Typo