Context sensitive help call provides connection between the user's actual working situation and the associated help topic. It allows user to click F1 for Help on the item that currently has the focus.
AnetHelpTool generates an include file (of .H format) to connect the help system with the programmer's application. You can view the .H file using, for example, Notepad. AnetHelpTool assigns succeeding numbers to topic context strings. The number is an output parameter which should be assigned to the appropriate control context ID by the application developer .