Mention doc-view-scale-internally in the DocView manual node

* doc/emacs/misc.texi (DocView Navigation): Mention
doc-view-scale-internally (bug#33226).

1 files changed, 6 insertions, 3 deletions

diff --git a/doc/emacs/misc.texi b/doc/emacs/misc.texi
index 83fb8acf7c2..3bfb729dc78 100644
--- a/doc/emacs/misc.texi
+++ b/doc/emacs/misc.texi
@@ -568,12 +568,15 @@ way (@code{doc-view-scroll-down-or-previous-page}).
 @findex doc-view-enlarge
 @findex doc-view-shrink
 @vindex doc-view-resolution
+@vindex doc-view-scale-internally
 @kindex + @r{(DocView mode)}
 @kindex - @r{(DocView mode)}
   You can enlarge or shrink the document with @kbd{+}
-(@code{doc-view-enlarge}) and @kbd{-} (@code{doc-view-shrink}).  These
-commands work by reconverting the document at the new size.  To
-specify the default size for DocView, customize the variable
+(@code{doc-view-enlarge}) and @kbd{-} (@code{doc-view-shrink}).  By
+default, these commands just rescale the already-rendered image.  If
+you instead want the image to be re-rendered at the new size, set
+@code{doc-view-scale-internally} to @code{nil}.  To specify the
+default size for DocView, customize the variable
 @code{doc-view-resolution}.
 
 @node DocView Searching