What is an issuer fee?

Excuse me, could you please explain what an issuer fee is in the context of cryptocurrency and finance? I've heard the term mentioned but I'm not entirely clear on its meaning and purpose. Is it a fee charged by a company or individual who issues a new cryptocurrency or token? And if so, what does this fee typically cover? I'm interested in understanding the implications and potential costs associated with issuing a new digital asset, so any insight you can provide would be greatly appreciated.