Doc fix.

diff --git a/src/dispextern.h b/src/dispextern.h
index 5fb66ffb1018f840ee4e90a79ce6a5b308ea40b1..52e3c5fe2fba02a70970575eb3b43154ac77105b 100644 (file)
--- a/src/dispextern.h
+++ b/src/dispextern.h
@@ -2204,9 +2204,10 @@ extern EMACS_INT tool_bar_button_relief;
                         Terminal Capabilities
  ***********************************************************************/
 
-/* Each of these is a bit representing a terminal `capability' (bold, inverse,
-   etc).  They are used to when calling `tty_capable_p' to ask what a terminal
-   supports.  */
+/* Each of these is a bit representing a terminal `capability' (bold,
+   inverse, etc).  They are or'd together to specify the set of
+   capabilities being queried for when calling `tty_capable_p' (which
+   returns true if the terminal supports all of them).  */
 
 #define TTY_CAP_INVERSE                0x01
 #define TTY_CAP_UNDERLINE      0x02