error handling and syntax extension

[David L. Nicol]

If "catch" can be defined DURING PARSING

and SYNTAX ERRORS are catchable


error handling can be used to define otherwise
undefined syntax, becoming a macro language.

This would be similar to the RFC18 immediate subroutines,
as it would be another way to change the language of the
remainder of the current program.



A way to describe syntax errors within the exception object
would need to be defined, that looks like the major block.