If you accidentally delete a Workspace tab, what can you do? Here's the answer!
1. Create a new mail memo
2. Put your cursor in the body field
3. Choose the "Create --> Hotspot --> Button..." menu
4. In the formula editor that comes up for the button type the formula
"@Command( [WindowWorkspace] )" (minus the quotes)
5. Click outside of the button, to close the design pane and then click on the button
The workspace should now appear in a new window, if you right-click on the window title you can choose "Bookmark..." and select the location in which to place it.