When you launch SiteBuilder, it will automatically open the same site and pages you were editing when you exited the program. If you don't see the site or pages you want to edit, you can open them again.
To open a page in your site:
You can open a page in your site by double-clicking its name in the Site Contents pane on the right side of your SiteBuilder screen. Click the + symbol to see the pages in any folder.
SiteBuilder Site Contents Pane
You can also open a page using the Open Page file browser.
Open the browser:
Select "Open Page" from the "File" menu.
SiteBuilder File Menu: Open Page
Click the Open Page icon on the SiteBuilder toolbar.
SiteBuilder Toolbar: Open Page
Use the keyboard shortcut Ctrl+O
Open the page by double-clicking its name in the browser or by highlighting its file name and clicking Open.
SiteBuilder Page File Browser