org.el (org-default-properties): Add EXPORT_OPTIONS.

(org-buffer-property-keys): docstring fix.
(org-default-properties): Add EXPORT_OPTIONS.

Thanks to Sébastien Vauban for catching this and his patch.

lisp/org.el

@@ -13401,7 +13401,7 @@ but in some other way.")
 (defconst org-default-properties
   '("ARCHIVE" "CATEGORY" "SUMMARY" "DESCRIPTION" "CUSTOM_ID"
     "LOCATION" "LOGGING" "COLUMNS" "VISIBILITY"
-    "TABLE_EXPORT_FORMAT" "TABLE_EXPORT_FILE"
+    "TABLE_EXPORT_FORMAT" "TABLE_EXPORT_FILE" "EXPORT_OPTIONS"
     "EXPORT_FILE_NAME" "EXPORT_TITLE" "EXPORT_AUTHOR" "EXPORT_DATE"
     "ORDERED" "NOBLOCKING" "COOKIE_DATA" "LOG_INTO_DRAWER" "REPEAT_TO_STATE"
     "CLOCK_MODELINE_TOTAL" "STYLE" "HTML_CONTAINER_CLASS")
@@ -13853,7 +13853,8 @@ and the new value.")
 With INCLUDE-SPECIALS, also list the special properties that reflect things
 like tags and TODO state.
 With INCLUDE-DEFAULTS, also include properties that has special meaning
-internally: ARCHIVE, CATEGORY, SUMMARY, DESCRIPTION, LOCATION, and LOGGING.
+internally: ARCHIVE, CATEGORY, SUMMARY, DESCRIPTION, LOCATION, and LOGGING
+and others.
 With INCLUDE-COLUMNS, also include property names given in COLUMN
 formats in the current buffer."
   (let (rtn range cfmt s p)