Certain Emacs commands switch to a specific buffer with special
contents. For example, @kbd{M-x shell} switches to a buffer named
-@samp{*Shell*}. By convention, all these commands are written to pop up
+@samp{*shell*}. By convention, all these commands are written to pop up
the buffer in a separate window. But you can specify that certain of
these buffers should appear in the selected window.