A convenience initializer for a fatal error
that includes the key "message" in the
infoDictionary.Use this initializer as an
example of how to write one's own exception.
Nodes of different colours represent the following:
Solid arrows point from a procedure to one which it calls. Dashed
arrows point from an interface to procedures which implement that interface.
This could include the module procedures in a generic interface or the
implementation in a submodule of an interface in a parent module.