China DOS Union

Everyone has definitely seen and used quite a few DOS commands and their parameters. I wonder whether anyone has noticed this question:
Something like "dir /p" is actually the same as "dir/p", and also the same as "dir /p". In other words, whether there is a space before the parameter, and how many spaces there are, does not matter at all!
And "ping 10.72.11.96 -t" and "ping 10.72.11.96 -t" are also the same, but "ping 10.72.11.96-t" is wrong. (It can also be stated as: "ping -t 10.72.11.96" and "ping -t 10.72.11.96" are also the same, but "ping-t 10.72.11.96" is wrong.)

So how does DOS itself define this???
(Actually, anywhere parameters are used—like HTML statements and so on—there should be formatting requirements for parameters, right? And there are strict aspects as well as relaxed ones! Experts, who can sum this up!!!)

I'm not very clear on the specifics, but for most DOS commands you do need to add a space before the parameters. For example, when installing Win98 with setup.exe, if you add parameters, you have to use the format setup /is/ie, otherwise after running for a while it will prompt an error.
I guess commands like DIR and FORMAT just don't have much of a requirement.

It depends on each piece of software. Some require it, some don't...

The key is in the design—whatever way it is designed, that's the way it is.