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documentation/trunk/eiffel/Tutorials/invitation-eiffel-i2e/i2e-classes.wiki
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@@ -7,7 +7,7 @@ Such objects are called the '''direct instances''' of the class. Classes and obj
{{info|"Object-Oriented" is a misnomer; "Class-Oriented Analysis, Design and Programming" would be a more accurate description of the method. }}
To see what a class looks like, let us look at a simple example, <code>ACCOUNT</code>, which describes bank accounts. But before exploring the class itself it is useful to study how it maybe used by other classes, called its '''clients'''.
To see what a class looks like, let us look at a simple example, <code>ACCOUNT</code>, which describes bank accounts. But before exploring the class itself it is useful to study how it may be used by other classes, called its '''clients'''.
A class <code>X</code> may become a client of <code>ACCOUNT</code> by declaring one or more '''entities''' of type <code>ACCOUNT</code>. Such a declaration is of the form:
<code>acc: ACCOUNT</code>

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documentation/trunk/eiffel/Tutorials/invitation-eiffel-i2e/i2e-design-contract-and-assertions.wiki
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@@ -143,7 +143,7 @@ Under EiffelStudio you may also set up compilation options, for the whole system
This ability to check assertions provides a powerful testing and debugging mechanism, in particular because the classes of the EiffelBase Libraries, widely used in Eiffel software development, are protected by carefully written assertions.
Run-time monitoring, however, is only one application of assertions, whose role as design and documentation aids, as part of theory of Design by Contract&#153;, exerts a pervasive influence on the Eiffel style of software development.
Run-time monitoring, however, is only one application of assertions, whose role as design and documentation aids, as part of the theory of Design by Contract&#153;, exerts a pervasive influence on the Eiffel style of software development.

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documentation/trunk/eiffel/Tutorials/invitation-eiffel-i2e/i2e-event-driven-programming-and-agents.wiki
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[[Property:title|I2E: Event-Driven Programming and Agents]]
[[Property:weight|-7]]
[[Property:uuid|16fdab60-ae42-1bb8-f4bb-89e34d18a842]]
The division of roles in object technology is clear: of the two principal constituents of a system, object types and operations, the first dominates. Classes, representing object types, determines the structure of the software; every routine, representing an operations, belongs to a class.
The division of roles in object technology is clear: of the two principal constituents of a system, object types and operations, the first dominates. Classes, representing object types, determines the structure of the software; every routine, representing an operation, belongs to a class.
In some circumstances it is useful to define an object that denotes an operation. This is especially useful if you want to build an object structure that refers to operations, so that you can later traverse the structure and execute the operations encountered. A typical application is '''event-driven programming''' for Graphical User Interfaces (GUI), including Web programming. In GUI programming you will want to record properties of the form
<code>