unfortunately - the 'tree' command is not on Macs by default, but maybe you could paste the pre-formatted output from a run on your test environment for this exercise, to show how dirs ending in / are truly hierarchical in an ascii art way?

```
b8e8561349da:tmp$ ls -F data/
access.log    backup/       hardware.cfg
b8e8561349da:tmp$ tree data/
data/
├── access.log
├── backup
│   └── hardware.cfb
└── hardware.cfg

1 directory, 3 files
b8e8561349da:tmp$ 
```