Sometimes you want to link directly to an external file rather than store an embedded image in the Author library. Using a linked File object also gives you the option of using a different file for each of the Print, Help, or Web output tabs.
Using this method, the new File object is created with the template set to "(none)". If you already have a "linked" template that points to the directory containing the file you want to use, you can switch to the General tab and select your template. If you have specified the Source type and Directory location in the template, these fields will be updated in the new File object, and you can bypass step 4. If you don't have a linked template, follow all of the steps.