Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Specifically,what does the line "which all the rooms opened off" mean.Does the hallway have these doors which were open?
It simply means that the hallway contained entrances to all the rooms; each room could be entered via the hallway.
^ It would probably look similar to this.
Required, but never shown