possibility of selecting round trip only on internal roads, and do not force a round path over boundary

[vlasvlasvlas]

Hi, i was testing the ChPP function, its great, and works well! congrats!

i want to ask if maybe there's a possibility of selecting round trip only on internal roads, and do not force a round path over boundary,

example:

Maybe if i could select to complete the sequence, every edge in a graph and starts and ends on the same node, but avoid using return (2 way paths) at boundarys, only on inside internal roads.

Thanks!

[cvvergara]

I dont understand the functionality you are requesting