Instantiable

public OverlayPS

Include file:

OverlayUnidraw/scriptview.h

the OverlayScript class hierarchy is a tree of ExternView classes that are derived from OverlayPS and PostScriptView for convenience, to inherit a complete mechanism for writing and reading graphical data.

This capability is similar to the serialization mechanism of JavaBeans, but there is no need for a versioning system because the format used for the ASCII serialization supports arbitrary extension of an object's format by adding defaulted keyword-prefixed arguments.

An older program can read newer formats, because the deserialization is set up to convert unknown keyword arguments into attributes on in a property list. A newer program can read older formats by using default values for missing keyword-prefixed arguments.