Does cityflow have gui ?

I wanna know whether the cityflow has gui? Just like sumo-gui, so that we can create a roadnet like drawing a line.

Or cityflow can only create these roadnet/flow files by write the json file ?

I wanna know whether the cityflow has gui? Just like sumo-gui, so that we can create a roadnet like drawing a line.

Or cityflow can only create these roadnet/flow files by write the json file ?

https://cityflow.readthedocs.io/en/latest/replay.html#start

But I do not understand to choose files in the model. Compared to Sumo, It is complicated and time-consuming