When you have made changes in a file, but you have not saved them yet,
they could be lost if your computer crashes. To protect you from
this, Emacs writes "auto save" files periodically. The auto save file
-name as a # at the beginning and the end; for example, if your file is
-named "hello.c", its auto save file's name is "#hello.c#". When you
-save the file in the normal way, its auto save file is no longer
+name has a # at the beginning and the end; for example, if your file
+is named "hello.c", its auto save file's name is "#hello.c#". When
+you save the file in the normal way, its auto save file is no longer
necessary so Emacs deletes it.
If the computer crashes, you can recover your auto-saved editing by