The MIDI Forum

What is the rule of sending a Note On after F0 and before F7?

I found something but I could not understand how it works. If someone can provide a valid example or there is a specific midi protocol I should follow.

"if a 0x90 happened to be sent sometime after a 0xF0 (but before the 0xF7), then the SysEx message would be considered done at that point. It should be noted that, like all System Common messages, SysEx cancels any current running status. In other words, the next Voice Category message (after the SysEx message) must begin with a Status."