To return the username of a user
The function tells you the username of the current or a user.
This refers to the display name that is on file in the profile of the user.
userName()
userName(user)
string
userName() To return the username of the current user.
Result: Steve Rogers (if Captain America is processing the function and has this on file in his profile)
userName(myUser) To return the username of a given user.
Select Captain America in the user field Superhero.
Result: Captain America
(if Captain America is selected in the Superhero field and that is the display name on file)
user, which returns the current or a specific user.
userFullName, which returns the full name of a user.