Thanks for your answer. I guess I can ignore them for now.

Thanks for your response. I used the Parallel RLC Circuit Example and on pressing the "Get Discrete Equations"  button, I got an empty set {}, which I think means it's a continuous system.

 I have one further question, using the above example, when I press the "Get Initial Equations"  button, there are the following variables in the list:

`msim/CFUNC1`(t)=0.,`msim/RFUNC1`(t)=false,`msim/loop`(t)=true,terminal()=false,`msim/reconfig`(t)=false

What's the meaning of the variables?

gamba