[rights-examples] 2 entries for to-do list

- In a collection of 18 songs, each has a 20-second "preview" excerpt marked
off. Anyone can play any of the preview excerpts anytime they want. Only
people who have purchased the collection may play any songs in its entirety.

- A user may read a given electronic book anytime until July 15, 2003. Until
July 13, 2003, the user may give copies of the work to others, but they may
only have access to the work for a period of 48 hours.

Bob