Quick Question about "perform"

Hey everyone,

I have a question about the "perform" setting. The documentation says:
"Text to send on connection, these can be stacked and will be sent in
this order"

What exactly does it mean by "stacked"? I just need to send an extra
command to the server on connection and I'm not sure how exactly to do
it.

Is the proper way something like:
perform = "PROTOCTL HCN;LOGIN username password";

Or is it something like this:
perform = "PROTOCTL HCN";
perform = "LOGIN username password";

Thanks for your help.
~Schiz0