-Before writing a file, `write-region' calls the functions on this hook
-with arguments START, END, FILENAME, APPEND, VISIT, and CODING-SYSTEM,
-the same as the corresponding arguments in the call to
-`write-region'.
+Before writing a file, `write-region' calls the functions on this hook with
+arguments START, END, FILENAME, APPEND, VISIT, LOCKNAME and CODING-SYSTEM,
+the same as the corresponding arguments in the call to `write-region'.