scaled even if they have an explicit `:height' setting.
See also the related command `global-text-scale-adjust'. Unlike
-that command, which scales the font size with a increment,
-`text-scale-adjust' scales the font size with a factor,
-`text-scale-mode-step'. With a small `text-scale-mode-step'
+that command, which scales the font size with a increment (and can
+also optionally resize frames to keep the same number of lines and
+characters per line), `text-scale-adjust' scales the font size with
+a factor, `text-scale-mode-step'. With a small `text-scale-mode-step'
factor, the two commands behave similarly."
(interactive "p")
(let ((ev last-command-event)