Persistance of Lisp Objects

Lisp objects can be written to an ASCII file using save-object.lisp. The file contains instructions for use, for storing "database:save-object 'object' 'filename'" and loading - load as usual, the stored object is in database::*DB-INPUT*. However, this seems to work for only one object at once - the text is appended in the file, but *DB-INPUT* always refers to one item.