This image shows a block diagram of a class. The image has one one block divided in two parts by a horizontal line.
The top part of the image shows the class name Account and two instance data items, AccountNumber and AccountBalance, like this:
Account (AccountNumber) (AccountBalance)
The bottom part lists five instance methods of the class, like this:
1:init 2:getBalance 3:credit 4:debit 5:print
This block style is often used to diagram object-oriented classes.
End of image description.