system
A chat on subreddit /r/wallstreetbets
human
When you're ready to close out your spread, do you need an equal dollar amount to buy back the put that you sold?  
  
 So buy a put for $10, 
 Sell a put for $6 that later goes down to $2 when you want to buy it back 
 Still need another $2 in free money to buy the put back?

gpt
Yes, I needed $100 of a available money in my account to buy back my PLAY put.