(set-scroll-bar-mode 'left)
-*** Redisplay with scaled images is slow when built with Cairo.
+*** Redisplay with scaled images is slow in Emacs built with Cairo.
-Cairo expends a noticeable amount of time displaying large images with
-a transform applied. These images most frequently appear within Eww
-buffers or Image Mode buffers after executing the image scaling
+Cairo expends a noticeable amount of CPU time displaying large images
+with applied transforms. These images most frequently appear within
+EWW buffers or in Image Mode buffers after executing the image scaling
commands `i +' or `i -', and their presence incurs a performance
penalty of hundereds of milliseconds to seconds upon redisplay. The
-remedy is to build without Cairo after verifying the XRender extension
-is present on your X server and its headers are present on your
-system, whereupon Emacs will use that extension to efficiently perform
-image transforms within the X server.
+remedy is to build Emacs without Cairo after verifying the XRender
+extension is present on your X server and its headers are present on
+your system, in which case Emacs will use XRender to efficiently
+perform image transforms within the X server.
*** Error messages about undefined colors on X.