Errata for "Program Monitoring and Visualization: an Exploratory Approach"

• p. 112. Figure 10.1. The figure is sideways.
• p. 195. The NMSU-UNLV-UTSA language based on Icon is referred to as "Icon-2". At the demand of the Icon Project, the name was changed to "Unicon". The Unicon home page is http://unicon.sourceforge.net.
• p. 187. The event codes list does not include the new E_Deref events that occur when a variable is dereferenced. The event value for these events is a string variable name plus scope code, similar to E_Assign events.
• p. 187. The event value for function failure (E_Ffail) events is not -1, it is the function (i.e. procedure value) that failed.