[T7][T14-C4]

[SukiTsang]

No description provided.

[hang15]

Some comments on your user guide:

Features/User experience

1. Your datetime input seems to be very rigid or fixed. Try to accommodate/allow some degree of flexibility, eg. DD-MM-YY. What about an event with a fixed date and no fixed time?
2. There are inconsistencies in your user guide on the datetime format. Please indicate if it is meant to be flexible.
3. You may want to indicate/think through in detail how your undo feature should work. For eg. how many undos are allowed?

Housekeeping -
You need to acknowledge addressbook-level4 or its parent project/org for the code base.