arrays names of consisting data

[behdadebsh]

I think every Lungsim user would highly benefit from if there was some sort of documentation or at least concise commenting on all the arrays defined in "arrays.f90" with what each index of those arrays is for and includes. A full description of each array with order of indices in each.
i.e. elem_cnct_2d( : , : , : ) which is an allocatable integer defined in arrays.f90. What is each index represents and means (like number of node, connected to other elements or the values that it can take, upstream, downstream elements and etc.)