Step Through the Code
Now run the macro, stepping through the code as it executes.
From the
AutoCAD Tools menu, click Macro 
Macros. From the Macros dialog box
select ThisDrawing.gardenpath and click Step
Into.
The VBA IDE is brought to the front of the screen, with the first line of the gardenpath macro highlighted. The highlighted line is the line of code that is about to be executed. To execute the line, press F8. The next line of code to be executed is the gpuser subroutine. To step into the gpuser subroutine, press F8 again.
Now you are at
the beginning of the gpuser routine.
Press F8 one more time to highlight the first GetPoint method.
Before you execute this line, open the Locals window by clicking
View Locals Window. This window is
displayed at the bottom of the VBA IDE. All the local variables and
their values are displayed in the Locals window while the macro is
executing.
Now press F8 to execute the GetPoint method. Notice that the highlight disappears and no new code is presented. This is because the GetPoint method is waiting for the user to enter a point in AutoCAD. Switch back to the AutoCAD window. You see the prompt you specified in the GetPoint call on the command line. Enter a point.
Control now returns to the macro. The line following the call to the GetPoint method is highlighted. Continue stepping through the code by pressing F8. Remember to switch back to the AutoCAD window when you are entering information.