I can't read the story, but I've noticed that there's a lot of vague terminology in these discussions. Does back to office mean an open office? Does it mean all

I can't read the story, but I've noticed that there's a lot of vague terminology in these discussions. Does back to office mean an open office? Does it mean all day where others can bother you? Does it mean the boss can tell you to have a meeting in their office in ten minutes? Does it mean you have to ask permission to take the afternoon off to visit the dentist (and wouldn't you have to do that with WFH)?