The List command opens the Window List dialog box, which lists all the windows currently open, plus all Edit windows (source files) you've opened since you last started Borland Pascal.

A recently closed file appears in the list prefixed with the word "closed."

When you choose a file that's already open from the list, Borland Pascal brings that window to the front and makes it active.

When you choose a file from the list that's been closed, Borland Pascal reopens the file in an Edit window having the same size and location as it did when you closed the window, and puts the cursor at its last location.

Press Alt-0 to pop up a complete list of all open windows.

For a full rundown of how to manage windows, go to the Help screen on window management.