How parts of a graph are represented – PB Docs 126

How parts of a graph are represented

Graphs consist of parts: a title, a legend, and axes. Each
of these parts has a set of display properties. These display properties
are themselves stored as properties in a subobject (structure) of
Graph called grDispAttr.

For example, graphs have a Title property, which specifies
the text for the title. Graphs also have a property TitleDispAttr,
of type grDispAttr, which itself contains properties that specify
all the characteristics of the title text, such as the font, size,
whether the text is italicized, and so on.

Similarly, graphs have axes, each of which also has a set
of properties. These properties are stored in a subobject (structure)
of Graph called grAxis. For example, graphs
have a property Values, of type grAxis, which specifies the properties
of the Value axis, such as whether to use autoscaling of values,
the number of major and minor divisions, the axis label, and so
on.

Here is a representation of the properties of a graph:

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