When I use a command like `fs`, I get output like 

```
0    0 * strings
1    6 * symbols
2   14 * sections
3    0 * relocs

```

It's clear to me on the left is an incrementing number that represents the flagspace. It's not clear to me what the number on the right is; `fs` is defined as 

```
Usage: fs [*] [+-][flagspace|addr] # Manage flagspaces

```