Here are some suggestions.
If you have a BASIC program written in StrongED's BASIC mode, you can run it by clicking Select (the left mouse button) on the 'Running man' icon at the top of the window. This will run the program in a single-tasking Command window in the centre of the screen, but this cannot display graphics etc. Alternatively, click Adjust and the program will run in a multi-tasking Task window, but the same limitations apply.
If you run the !Help application, found in the Apps folder, you will see some useful information when you hover the pointer over icons and menus.
You might also save  the program and double click on the file icon. This will run most likely run the program in a Command window. 
 You could find youself exiting the program into the BASIC command line (>). In that case type QUIT and Enter to get back to the desktop.
 Press F3, or choose the Save item on the StrongED menu. Give the file a name and drag the file icon to a directory view.
 Put the line
at the start of your program and it will exit the desktop to full screen, where you can do graphics, but this is not a ideal solution.