If no category is used, the above link will direct a patron to the Pass/Gift Certificate merchandise page and show all passes in all categories. The patron will see a list of all passes, like the HTML page below, from which they can pick.
A sample is shown at the bottom of the help page.
General Parameters
You can specify one or more categories in the URL and only those categories will be shown. In this case, the category numbers must be the same as the code table entry number in the Gift Certificate Categories Code Table shown to the right. Icons are entered on the Marketing Tab in Gift Certificate setup.
You might use this to show upcoming subscription passes for next year on a separate page, or gift certificates on a separate page.
You can also Link to specific pass if you wish.