This summary is not the rule. The rule text controls.
Evidence about a person's habits or a company's regular way of doing things can be used in court to show that they probably acted the same way on a specific occasion. For example, if someone always locks their car door every time they park, that habit can be used as evidence that they likely locked it on the day in question too.
This kind of evidence is allowed even if no one saw what happened that day and even if there's no other proof backing it up. The idea is that if someone does something the same way over and over, it's reasonable to believe they did it that way again, even without a witness or extra confirmation.
This is different from evidence about someone's general character. Character evidence asks whether someone is generally honest or careless as a person, which is usually not allowed to prove they acted a certain way. Habit evidence is more specific. It focuses on a repeated, particular response to a particular situation, like always wearing a seatbelt or always following the same steps to close up a store at night.
