\unset ECHO
1|basic key/value iteration| a:1 b:true
2|empty object iterates to nothing|[]
3|scalar is not iterable as object|[]
4|array is not iterable as object|[]
5|inverted section on object iteration key|[empty]
6|nested section reaches outer objiter key|a=1 b=2 
7|object iteration nested inside array iteration|a:1;b:2;