How to define user defined source in Neuron solver?

[KJ]

Hello, as mentioned in title, how to define user defined source in Neuron solver? It seems specific formatted text file should be upload, but it is hard to find the format even in the HTML manual. Thanks.

[KJ]

https://forum.zmt.swiss/topic/175/user-defined-waveforms

Linked thread illustrated the exact solution for the above problem.