@chapter Frames
@cindex frame
- A @dfn{frame} is a rectangle on the screen that contains one or more
-Emacs windows. A frame initially contains a single main window (plus
-perhaps a minibuffer window), which you can subdivide vertically or
-horizontally into smaller windows.
+ In Emacs editing, A @dfn{frame} is a screen objec that contains one
+or more Emacs windows. It's the kind of object that is called a
+``window'' in the terminology of graphical environments; but we can't
+call it a ``window'' here, because Emacs uses that word in a different
+way.
+
+ A frame initially contains a single main window and/or a minibuffer
+window; you can subdivide the main window vertically or horizontally
+into smaller windows. In Emacs Lisp, a @dfn{frame object} is a Lisp
+object that represents a frame on the screen.
@cindex terminal frame
When Emacs runs on a text-only terminal, it starts with one