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5.3.1 Overview of modifying properties
Each context is responsible for creating certain types of graphical objects. The settings used for printing these objects are also stored by context. By changing these settings, the appearance of objects can be altered.
There are two different kinds of properties stored in contexts: context properties and grob properties. Context properties are properties that apply to the context as a whole and control how the context itself is displayed. In contrast, grob properties apply to specific grob types that will be displayed in the context.
The \set and \unset commands are used to change values
for context properties. The \override and \revert
commands are used to change values for grob properties.
See also
Internals Reference: Backend, All layout objects, OverrideProperty, RevertProperty, PropertySet.
Known issues and warnings
The back-end is not very strict in type-checking object properties. Cyclic references in Scheme values for properties can cause hangs or crashes, or both.
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