Abort

This issues a compilation error and aborts the compilation placing the associated text message in the LST file.  It is employed using the syntax

$abort 'text'

It can be used with the extension .noerror causing the error count to NOT be increased. When a save file is written, all remaining unexecuted code will be flushed. This allows effective reuse of the save file.  The syntax is

$abort.noerror 'text'