Customizer's Guide > Customizing Help > Customizing Tag Help > Creating Tag Help for a New Document Type > Customizing Tag Help for an Existing Document Type
  
Customizing Tag Help for an Existing Document Type
Use the following procedure to customize tag help for an existing document type, such as a document type delivered with Arbortext Editor.
1. Set the environment variable APTHELPPATH to specify a directory in which you will store the custom help files.
2. Copy the existing tag help files to this new directory.
3. Use Arbortext Editor to update the copies of the files as necessary.
4. Test your customized help by placing the mouse pointer over a tag and pressing SHIFT+F1. The customized tag help is displayed.