Please Get Well Poem How Do You Get Symbols/special Characters On A Zwinky User Name? Please Can Someone Help With This?

How do you get symbols/special characters on a zwinky user name? Please can someone help with this? - please get well poem

I'm playing away and remarked, user name, the symbols / special characters in user names. When you welcome an account that says only letters, numbers and special characters and_ "

Can anyone help me with this? I do not know how they do it.