I'm trying to see if there are any experts out there that answer this. ATC gave us a clearance the other day that we weren't sure how to enter into this box. They told us to fly a J-route and intercept another J-route. Trouble is that there was no intersection where the two J-route intersect. Is there a way to enter this into the GNS? We looked in the book and never found anything that addresses this item. So, we ended up using the VOR's and FMS and got it done, but just curious if anyone know the format. Thanks for the help.