Read this API reference to know the bootstrap functions in Dreamweaver
In Dreamwaver 18.1
Returns the compatible Bootstrap version for the current or active html/php document.
- The version in the bootstrap related CSS file that is linked to the page.
- Site preference if no boostrap css file is linked to the page, and the page is a part of a site within Dreamweaver.
- Version 4.0.0 if no boostrap css file is linked to the page, and the page is not a part of any site.