Dreamweaver has the following controls for formatting the HTML source:

HTML preferences control what changes, if any, Dreamweaver makes to your HTML source when you open an HTML document. See HTML preferences.

Source Format preferences control common HTML formatting options, such as line length and indentation. See Source Format preferences.

SourceFormat.profile gives you the greatest degree of control over exactly how Dreamweaver writes HTML. See Editing the source formatting profile.

HTML Tag Colors preferences control how HTML tags (and the text between them) are color-coded in the HTML inspector. See HTML Tag Colors preferences.