Considering subsections as parts of the big map as zones , so but clicking on one of them it opens "a zoom" or new map ; as example clicking on a mountain β° will open the map of the cave inside that mountain.
we needs here a tool to specify the zones like a pen π and also a polygonal pen to set the zone boundaries
by right click on the zone we can set the section or subsection to open π .
this gives feeling of progressing inside the map and gives a depth to the processing in gaming and organized learning.
furthermore, also supporting sections is also a big boost