Use the figure for the question(s) below. 
-The above screen shot from Google Finance shows the basic stock information for Logitech International SA (USA) after the close of business on May 30,2008.What is the difference between the opening and closing price of the stock on this date?
Definitions:
Post Office Protocol
An internet standard protocol used by local email clients to retrieve emails from a remote server over a TCP/IP connection.
Facebook Connect
A set of application programming interfaces (APIs) provided by Facebook that enable third-party websites to integrate with Facebook for authentication and social sharing features.
Instant Messaging
A form of real-time communication through text messages exchanged between users over the internet.
OpenPgP Encryption
A non-proprietary protocol for encrypting email communication using public-key cryptography for increased security.
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