Drag and drop the HTML file on the browser window to test.

Or, use the local URL that would look like:
--------------------------------------------
file:///C:/Projects/FoldingBrowser/Browser/FoldingBrowser-TopAndBottom.html
file:///C:/Projects/FoldingBrowser/Browser/FoldingBrowser-SideBySide.html

The text from these files is embedded in the source code (See: GlobalRefs.vb).