The language processor can provide additional information, depending
on the condition trapped:
NOMETHOD
The object that raised the NOMETHOD condition.
NOSTRING
The object that caused the NOSTRING condition.
NOTREADY
The stream object that raised the NOTREADY condition.
SYNTAX
An array containing the objects substituted into the secondary error
message (if any) for the syntax error. If the message did not contain substitution
values, a zero element array is used.
USER
Any object specified by an ADDITIONAL or ARRAY option of the
RAISE instruction that raised the condition.
