new line character aka chat parser documentation?
 

I've found that you can color text with |cFFFFFF command,
I'm looking for new line character, anyone can help ?
Regards.

It's \n

So your text might be
which would appear as:

This is sample
text

Also, don't forget using |r to escape the colour sequence after you initiate with |c

newline
 

But this affect only console warning, i want newline on global chat,
sending: /zone this is\ntest won't do nothing.

If it doesn't work, then you can't do that. You'll have to send two messages.