You should have a man page regardless of the length of your help. But it's also really useful to be able to get full synopsis of all the options even if all yo

You should have a man page regardless of the length of your help. But it's also really useful to be able to get full synopsis of all the options even if all you have available is the binary. Some programs have a lot of options. The "--help" output for rsync on my machine is 184 lines, and is actually pretty terse. ... and there truly is no agreed-upon idea of what constitutes a "page". Even the VT100 screen size was never dominant enough to always count. And nowadays people's windows may be of almost any size.