Ch.13 #CW Content Wrapper / Warning
Emails have a subject line & then we click to expand the body of the message.
Fediverse has the same thing. A content wrapper [CW] button when posting that adds a title to our post, then we click to expand that post. We can even automate opening all by default for those who prefer that.
It takes very little extra time to add a title. The Subject line doesn't prevent you sending email! It's good for really long posts or stuff that people might not want to see.