Viewing Modula-2 CLASS types
You need to use the implicit SELF parameter of methods to accessCLASS data.
Modula-2 CLASS types are viewed like RECORD data structures withone exception.
When a CLASS is declared in a DEFINITION module you can alsodeclare data items in the IMPLEMENTATION module. These data items are allocated intheir "own" record format and a hidden field in the CLASS structure isused to access this. In the debugger this field is named classImpData. You can expandand contract this structure like any other structure.