Properties

A property is an attribute of an object. Each object has a set of valid properties. The set of valid properties varies from object to object and depends upon the object class and type.

Not all classes have all properties available; some properties can be applied to more than one class.

A property name is the name of a property defined for a given object. Property names are unique.

Values of Properties

Each property has a value which is established initially (usually when the object is defined to the function) but which may be amended at run time by the use of the appropriate Property Logic Command.
Certain rules apply to the Setting of Property Values.
Incorrect commands or invalid object property values will produce the appropriate Error.
These commands are applied to the unique identification or Tag Name given to each object in the function.
The type and number of valid values that can be attributed to a given property varies. Values can be strings or numbers. All values can be variables.
The value of a specific property can be changed without changing any other property of the same object or the properties of any other object.
There are rules governing the Assignment of changes to property values and rules governing Inheritance.
A range of default values for colors and fonts are held in the system Application Definition File.

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Topic ID: 510009