The secret to extracting the most functionality from the Software Update Wizard is understanding what all the script keywords and options do, and applying them to your update scripts.
The following links let you quickly jump to the most convenient place to find what you're looking for:
Alphabetically sorted keyword list.
Keyword list grouped by category.
The full keyword list, including example syntax etc..
You can return to this page at any time by clicking the 'Keywords' button in the help viewer toolbar: