Within windows, tabbed panes enable you to switch between several files that appear to share the same space on the screen. You can additional windows into a tabbed pane, or you can undock a tabbed pane so that it floats in the workspace. You can clone the Source Editor and web browser, which enables you to view different parts of the same file.
For help with managing workspaces and windows, see:
Workspaces in the IDE
Creating a Workspace
Renaming a Workspace
Changing the Automatic Loading of Workspaces
Deleting a Workspace
Docking and Undocking Windows
Cloning the Source Editor or Web Browser