Create links to Desktop Help System documents using the link element in the ArcToolbox Documentation Editor
The ArcToolbox documentation Editor allows for the inclusion of links. The Add Link button adds a link to a desktop help system document, a Web page, or any file based document.
When the ArcToolbox Documentation Editor is open and the Add Link button has been clicked enter a name and a path. The name is the text that appears in the documentation and becomes the link. The path is the full path to the Desktop Help System document that requires a connection.
Enter the link text, in the Name input box, as it appears in the documentation.
Click here for more information about CLIP.
Find the help document for the connection. Right-click on the page and select Properties.
Copy the Address (URL) value.
Paste it into the Path input box on the ArcToolbox Documentation Editor.
The following is an example: mk:@MSITStore:C:\ArcGIS\Help\AnalysisTools.chm::/clip_esri.htm