diff --git a/.github/scripts/pyspelling.words b/.github/scripts/pyspelling.words
index 0c986f14c6..7d9f6ffb36 100644
--- a/.github/scripts/pyspelling.words
+++ b/.github/scripts/pyspelling.words
@@ -896,6 +896,7 @@ trustless
 Tse
 Tsujikawa
 TTL
+tty
 tvOS
 txt
 typedef
diff --git a/docs/cmdline-opts/show-headers.md b/docs/cmdline-opts/show-headers.md
index d733784ac2..40c5ae790b 100644
--- a/docs/cmdline-opts/show-headers.md
+++ b/docs/cmdline-opts/show-headers.md
@@ -24,6 +24,12 @@ non-HTTP protocols, the "headers" are other server communication.
 This option makes the response headers get saved in the same stream/output as
 the data. --dump-header exists to save headers in a separate stream.
 
+When HTTP headers are output to a tty, curl may use escape codes to make the
+header field names appear in bold and URLs in `Location:` headers be
+especially marked as such. Disable the use of terminal escape codes with
+--no-styled-output. (This means using the --styled-output option with a
+`--no-` prefix to disable it.)
+
 To view the request headers, consider the --verbose option.
 
 Prior to 7.75.0 curl did not print the headers if --fail was used in