The watch expression editor, which appears below, has three sections. The top section is used to edit the probe's conditional expression. The bottom section is used to edit the watch expression, and the section on the right side is used to manage the watch window.
The expression shown in the expression editor produces a listing of the message stack. This listing is shown in the watch window at the bottom. In the code you will notice a variable, DOITCONTEXT. This variable is the context of the method that contains the probe. It is passed to the probe as an argument.
