If you choose to create HTML files for properties, you must give them the same name as the step and the property, separated by an underscore. For example, assume that MeshingStep is the step name and MeshResolution is the property name. The help file for the step must be named MeshingStep, and the help file for the property must be named MeshingStep_MeshResolution. When you use these file-naming conventions, you do not need to use the attribute helpFile to explicitly reference the HTML file for a step. The extension can automatically find and display the custom help for steps and their properties.