```
$ sfdk --help
/usr/bin/man: invalid option -- '-'
/usr/bin/man: invalid option -- 'o'
/usr/bin/man: invalid option -- '-'
/usr/bin/man: invalid option -- 'e'
usage: mandoc [-ac] [-I os=name] [-K encoding] [-mdoc | -man] [-O options]
	     [-T output] [-W level] [file ...]
```
Uhh... What?