@dfn{backup} file, before actually saving.
Emacs makes a backup for a file only the first time the file is
-saved from a buffer. No matter how many times you subsequently save
-the file, its backup remains unchanged. However, if you kill the
-buffer and then visit the file again, a new backup file will be made.
+saved from the buffer that visits it. No matter how many times you
+subsequently save the file, its backup remains unchanged. However, if
+you kill the buffer and then visit the file again, a new backup file
+will be made.
For most files, the variable @code{make-backup-files} determines
whether to make backup files. On most operating systems, its default