How to use documentation properly

I’m sorry if this is a basic question, but I’m still struggling with properly using the documentation.

Say I’m looking the Widget documentation

and find a property I wish to use, so I click on it to get more detail$navType-detail

How exactly do I determine the possible values I can use?

Since it specifies Bootstrap, I have to go searching in the Bootstrap documentation or am I missing something straightforward in the Yii documentation?

Thank you.

I this case you’re not missing anything. At the very top of the same page there’s a link to That’s where values are. We’re not repeating whole bootstrap docs because on their website it’s presented with visual examples and explained well.