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-rw-r--r--doc/emacs/display.texi6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/emacs/display.texi b/doc/emacs/display.texi
index a0d0792eacc..c4554eb3187 100644
--- a/doc/emacs/display.texi
+++ b/doc/emacs/display.texi
@@ -1763,3 +1763,9 @@ itself, in pixels; the default is 2.
in text that is hard to read. Call the function
@code{tty-suppress-bold-inverse-default-colors} with a non-@code{nil}
argument to suppress the effect of bold-face in this case.
+
+@vindex display-raw-bytes-as-hex
+ Raw bytes are displayed in octal format by default, for example a
+byte with a decimal value of 128 is displayed as @code{\200}. To
+change display to the hexadecimal format of @code{\x80}, set the
+variable @code{display-raw-bytes-as-hex} to @code{t}.