'C-S-u'.
Note that, unlike the X build of Emacs, the PGTK build cannot
-automatically switch to text-mode interface (thus emulating -nw) if it
-cannot determine the default display; it will instead complain and ask
-you to invoke it with the explicit -nw option.
+automatically switch to text-mode interface (thus emulating '-nw') if
+it cannot determine the default display; it will instead complain and
+ask you to invoke it with the explicit '-nw' option.
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** Emacs no longer reduces the size of the Japanese dictionary.